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Finding the Fourth Proportional to 487,500.76, 672,731.12 and 283,557.52

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Solution

The fourth proportional to 487,500.76, 672,731.12 and 283,557.52 is: 391,297.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,500.76 : 672,731.12 = 283,557.52 : x
  2. Step 2: Convert to fraction form
    487,500.76/672,731.12 = 283,557.52/x
  3. Step 3: Cross multiply
    487,500.76x = 672,731.12 × 283,557.52
  4. Step 4: Simplify right side
    487,500.76x = 190,757,963,232.58
  5. Step 5: Solve for x
    x = 190,757,963,232.58/487,500.76
  6. Step 6: Final answer
    x = 391,297.78

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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.