Home / 509,869.57-703,637.19-280,436.52

Finding the Fourth Proportional to 509,869.57, 703,637.19 and 280,436.52

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Solution

The fourth proportional to 509,869.57, 703,637.19 and 280,436.52 is: 387,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,869.57 : 703,637.19 = 280,436.52 : x
  2. Step 2: Convert to fraction form
    509,869.57/703,637.19 = 280,436.52/x
  3. Step 3: Cross multiply
    509,869.57x = 703,637.19 × 280,436.52
  4. Step 4: Simplify right side
    509,869.57x = 197,325,564,906.18
  5. Step 5: Solve for x
    x = 197,325,564,906.18/509,869.57
  6. Step 6: Final answer
    x = 387,011.85

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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.