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Finding the Fourth Proportional to 723,787.32, 998,865.90 and 469,356.60

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Solution

The fourth proportional to 723,787.32, 998,865.90 and 469,356.60 is: 647,737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,787.32 : 998,865.90 = 469,356.60 : x
  2. Step 2: Convert to fraction form
    723,787.32/998,865.90 = 469,356.60/x
  3. Step 3: Cross multiply
    723,787.32x = 998,865.90 × 469,356.60
  4. Step 4: Simplify right side
    723,787.32x = 468,824,302,679.94
  5. Step 5: Solve for x
    x = 468,824,302,679.94/723,787.32
  6. Step 6: Final answer
    x = 647,737.66

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Double scale
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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.