Home / 690,721.70-952,943.10-418,593.28

Finding the Fourth Proportional to 690,721.70, 952,943.10 and 418,593.28

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Solution

The fourth proportional to 690,721.70, 952,943.10 and 418,593.28 is: 577,505.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,721.70 : 952,943.10 = 418,593.28 : x
  2. Step 2: Convert to fraction form
    690,721.70/952,943.10 = 418,593.28/x
  3. Step 3: Cross multiply
    690,721.70x = 952,943.10 × 418,593.28
  4. Step 4: Simplify right side
    690,721.70x = 398,895,577,882.37
  5. Step 5: Solve for x
    x = 398,895,577,882.37/690,721.70
  6. Step 6: Final answer
    x = 577,505.50

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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.