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Finding the Fourth Proportional to 500,753.98, 690,663.54 and 347,792.37

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Solution

The fourth proportional to 500,753.98, 690,663.54 and 347,792.37 is: 479,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,753.98 : 690,663.54 = 347,792.37 : x
  2. Step 2: Convert to fraction form
    500,753.98/690,663.54 = 347,792.37/x
  3. Step 3: Cross multiply
    500,753.98x = 690,663.54 × 347,792.37
  4. Step 4: Simplify right side
    500,753.98x = 240,207,509,449.19
  5. Step 5: Solve for x
    x = 240,207,509,449.19/500,753.98
  6. Step 6: Final answer
    x = 479,691.66

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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.