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Finding the Fourth Proportional to 661,658.48, 992,487.72 and 287,681.52

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Solution

The fourth proportional to 661,658.48, 992,487.72 and 287,681.52 is: 431,522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,658.48 : 992,487.72 = 287,681.52 : x
  2. Step 2: Convert to fraction form
    661,658.48/992,487.72 = 287,681.52/x
  3. Step 3: Cross multiply
    661,658.48x = 992,487.72 × 287,681.52
  4. Step 4: Simplify right side
    661,658.48x = 285,520,375,870.93
  5. Step 5: Solve for x
    x = 285,520,375,870.93/661,658.48
  6. Step 6: Final answer
    x = 431,522.28

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.