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Finding the Fourth Proportional to 665,123.44, 918,172.52 and 423,737.04

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Solution

The fourth proportional to 665,123.44, 918,172.52 and 423,737.04 is: 584,949.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,123.44 : 918,172.52 = 423,737.04 : x
  2. Step 2: Convert to fraction form
    665,123.44/918,172.52 = 423,737.04/x
  3. Step 3: Cross multiply
    665,123.44x = 918,172.52 × 423,737.04
  4. Step 4: Simplify right side
    665,123.44x = 389,063,705,834.14
  5. Step 5: Solve for x
    x = 389,063,705,834.14/665,123.44
  6. Step 6: Final answer
    x = 584,949.62

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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.