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Finding the Fourth Proportional to 690,764.48, 952,890.12 and 475,530.88

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Solution

The fourth proportional to 690,764.48, 952,890.12 and 475,530.88 is: 655,981.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,764.48 : 952,890.12 = 475,530.88 : x
  2. Step 2: Convert to fraction form
    690,764.48/952,890.12 = 475,530.88/x
  3. Step 3: Cross multiply
    690,764.48x = 952,890.12 × 475,530.88
  4. Step 4: Simplify right side
    690,764.48x = 453,128,677,306.91
  5. Step 5: Solve for x
    x = 453,128,677,306.91/690,764.48
  6. Step 6: Final answer
    x = 655,981.44

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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.