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Finding the Fourth Proportional to 522,517.54, 721,140.90 and 307,677.52

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Solution

The fourth proportional to 522,517.54, 721,140.90 and 307,677.52 is: 424,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,517.54 : 721,140.90 = 307,677.52 : x
  2. Step 2: Convert to fraction form
    522,517.54/721,140.90 = 307,677.52/x
  3. Step 3: Cross multiply
    522,517.54x = 721,140.90 × 307,677.52
  4. Step 4: Simplify right side
    522,517.54x = 221,878,843,682.57
  5. Step 5: Solve for x
    x = 221,878,843,682.57/522,517.54
  6. Step 6: Final answer
    x = 424,634.25

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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.