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Finding the Fourth Proportional to 629,957.39, 869,319.54 and 358,020.54

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Solution

The fourth proportional to 629,957.39, 869,319.54 and 358,020.54 is: 494,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,957.39 : 869,319.54 = 358,020.54 : x
  2. Step 2: Convert to fraction form
    629,957.39/869,319.54 = 358,020.54/x
  3. Step 3: Cross multiply
    629,957.39x = 869,319.54 × 358,020.54
  4. Step 4: Simplify right side
    629,957.39x = 311,234,251,143.35
  5. Step 5: Solve for x
    x = 311,234,251,143.35/629,957.39
  6. Step 6: Final answer
    x = 494,056.04

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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.