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Finding the Fourth Proportional to 658,379.84, 908,565.44 and 356,573.92

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Solution

The fourth proportional to 658,379.84, 908,565.44 and 356,573.92 is: 492,072.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,379.84 : 908,565.44 = 356,573.92 : x
  2. Step 2: Convert to fraction form
    658,379.84/908,565.44 = 356,573.92/x
  3. Step 3: Cross multiply
    658,379.84x = 908,565.44 × 356,573.92
  4. Step 4: Simplify right side
    658,379.84x = 323,970,740,517.33
  5. Step 5: Solve for x
    x = 323,970,740,517.33/658,379.84
  6. Step 6: Final answer
    x = 492,072.69

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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.