Home / 731,139.40-1,008,965.46-408,845.80

Finding the Fourth Proportional to 731,139.40, 1,008,965.46 and 408,845.80

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Solution

The fourth proportional to 731,139.40, 1,008,965.46 and 408,845.80 is: 564,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,139.40 : 1,008,965.46 = 408,845.80 : x
  2. Step 2: Convert to fraction form
    731,139.40/1,008,965.46 = 408,845.80/x
  3. Step 3: Cross multiply
    731,139.40x = 1,008,965.46 × 408,845.80
  4. Step 4: Simplify right side
    731,139.40x = 412,511,290,666.07
  5. Step 5: Solve for x
    x = 412,511,290,666.07/731,139.40
  6. Step 6: Final answer
    x = 564,203.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.