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Finding the Fourth Proportional to 661,662.48, 992,493.72 and 287,685.52

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Solution

The fourth proportional to 661,662.48, 992,493.72 and 287,685.52 is: 431,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,662.48 : 992,493.72 = 287,685.52 : x
  2. Step 2: Convert to fraction form
    661,662.48/992,493.72 = 287,685.52/x
  3. Step 3: Cross multiply
    661,662.48x = 992,493.72 × 287,685.52
  4. Step 4: Simplify right side
    661,662.48x = 285,526,071,934.93
  5. Step 5: Solve for x
    x = 285,526,071,934.93/661,662.48
  6. Step 6: Final answer
    x = 431,528.28

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Similar ratio
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1.5x scale

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.