Home / 715,391,998.40-1,073,087,997.60-687,174,449.60

Finding the Fourth Proportional to 715,391,998.40, 1,073,087,997.60 and 687,174,449.60

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Solution

The fourth proportional to 715,391,998.40, 1,073,087,997.60 and 687,174,449.60 is: 1,030,761,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,391,998.40 : 1,073,087,997.60 = 687,174,449.60 : x
  2. Step 2: Convert to fraction form
    715,391,998.40/1,073,087,997.60 = 687,174,449.60/x
  3. Step 3: Cross multiply
    715,391,998.40x = 1,073,087,997.60 × 687,174,449.60
  4. Step 4: Simplify right side
    715,391,998.40x = 737,398,654,123,146,112
  5. Step 5: Solve for x
    x = 737,398,654,123,146,112/715,391,998.40
  6. Step 6: Final answer
    x = 1,030,761,674.40

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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.