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Finding the Fourth Proportional to 522,635.95, 721,251.71 and 307,736.47

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Solution

The fourth proportional to 522,635.95, 721,251.71 and 307,736.47 is: 424,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,635.95 : 721,251.71 = 307,736.47 : x
  2. Step 2: Convert to fraction form
    522,635.95/721,251.71 = 307,736.47/x
  3. Step 3: Cross multiply
    522,635.95x = 721,251.71 × 307,736.47
  4. Step 4: Simplify right side
    522,635.95x = 221,955,455,216.86
  5. Step 5: Solve for x
    x = 221,955,455,216.86/522,635.95
  6. Step 6: Final answer
    x = 424,684.63

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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.