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Finding the Fourth Proportional to 690,250.68, 952,589.16 and 418,342.32

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Solution

The fourth proportional to 690,250.68, 952,589.16 and 418,342.32 is: 577,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,250.68 : 952,589.16 = 418,342.32 : x
  2. Step 2: Convert to fraction form
    690,250.68/952,589.16 = 418,342.32/x
  3. Step 3: Cross multiply
    690,250.68x = 952,589.16 × 418,342.32
  4. Step 4: Simplify right side
    690,250.68x = 398,508,359,201.25
  5. Step 5: Solve for x
    x = 398,508,359,201.25/690,250.68
  6. Step 6: Final answer
    x = 577,338.60

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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.