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Finding the Fourth Proportional to 690,548.49, 952,698.92 and 689,484.15

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Solution

The fourth proportional to 690,548.49, 952,698.92 and 689,484.15 is: 951,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,548.49 : 952,698.92 = 689,484.15 : x
  2. Step 2: Convert to fraction form
    690,548.49/952,698.92 = 689,484.15/x
  3. Step 3: Cross multiply
    690,548.49x = 952,698.92 × 689,484.15
  4. Step 4: Simplify right side
    690,548.49x = 656,870,801,614.70
  5. Step 5: Solve for x
    x = 656,870,801,614.70/690,548.49
  6. Step 6: Final answer
    x = 951,230.52

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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.