Home / 1,291,751,170.40-1,937,910,190.80-418,392,840.80

Finding the Fourth Proportional to 1,291,751,170.40, 1,937,910,190.80 and 418,392,840.80

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Solution

The fourth proportional to 1,291,751,170.40, 1,937,910,190.80 and 418,392,840.80 is: 627,681,064.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,751,170.40 : 1,937,910,190.80 = 418,392,840.80 : x
  2. Step 2: Convert to fraction form
    1,291,751,170.40/1,937,910,190.80 = 418,392,840.80/x
  3. Step 3: Cross multiply
    1,291,751,170.40x = 1,937,910,190.80 × 418,392,840.80
  4. Step 4: Simplify right side
    1,291,751,170.40x = 810,807,749,944,082,048
  5. Step 5: Solve for x
    x = 810,807,749,944,082,048/1,291,751,170.40
  6. Step 6: Final answer
    x = 627,681,064.68

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Double scale
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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.