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Finding the Fourth Proportional to 510,781.59, 704,883.42 and 281,339.73

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Solution

The fourth proportional to 510,781.59, 704,883.42 and 281,339.73 is: 388,251.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,781.59 : 704,883.42 = 281,339.73 : x
  2. Step 2: Convert to fraction form
    510,781.59/704,883.42 = 281,339.73/x
  3. Step 3: Cross multiply
    510,781.59x = 704,883.42 × 281,339.73
  4. Step 4: Simplify right side
    510,781.59x = 198,311,711,064.28
  5. Step 5: Solve for x
    x = 198,311,711,064.28/510,781.59
  6. Step 6: Final answer
    x = 388,251.49

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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.