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Finding the Fourth Proportional to 872,251.73, 1,203,530.92 and 509,605.55

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Solution

The fourth proportional to 872,251.73, 1,203,530.92 and 509,605.55 is: 703,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,251.73 : 1,203,530.92 = 509,605.55 : x
  2. Step 2: Convert to fraction form
    872,251.73/1,203,530.92 = 509,605.55/x
  3. Step 3: Cross multiply
    872,251.73x = 1,203,530.92 × 509,605.55
  4. Step 4: Simplify right side
    872,251.73x = 613,326,029,136.94
  5. Step 5: Solve for x
    x = 613,326,029,136.94/872,251.73
  6. Step 6: Final answer
    x = 703,152.56

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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.