Home / 1,008,039,189.40-1,512,058,784.10-946,817,186.20

Finding the Fourth Proportional to 1,008,039,189.40, 1,512,058,784.10 and 946,817,186.20

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Solution

The fourth proportional to 1,008,039,189.40, 1,512,058,784.10 and 946,817,186.20 is: 1,420,225,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,039,189.40 : 1,512,058,784.10 = 946,817,186.20 : x
  2. Step 2: Convert to fraction form
    1,008,039,189.40/1,512,058,784.10 = 946,817,186.20/x
  3. Step 3: Cross multiply
    1,008,039,189.40x = 1,512,058,784.10 × 946,817,186.20
  4. Step 4: Simplify right side
    1,008,039,189.40x = 1,431,643,243,330,555,392
  5. Step 5: Solve for x
    x = 1,431,643,243,330,555,392/1,008,039,189.40
  6. Step 6: Final answer
    x = 1,420,225,779.30

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Half scale
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Double scale
Find fourth proportional to 1,008,039,190.40, 1,512,058,785.60 and 946,817,187.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.