Home / 753,485.40-1,130,228.10-487,546.20

Finding the Fourth Proportional to 753,485.40, 1,130,228.10 and 487,546.20

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Solution

The fourth proportional to 753,485.40, 1,130,228.10 and 487,546.20 is: 731,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,485.40 : 1,130,228.10 = 487,546.20 : x
  2. Step 2: Convert to fraction form
    753,485.40/1,130,228.10 = 487,546.20/x
  3. Step 3: Cross multiply
    753,485.40x = 1,130,228.10 × 487,546.20
  4. Step 4: Simplify right side
    753,485.40x = 551,038,415,288.22
  5. Step 5: Solve for x
    x = 551,038,415,288.22/753,485.40
  6. Step 6: Final answer
    x = 731,319.30

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Double scale
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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.