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Finding the Fourth Proportional to 658,531.86, 908,778.33 and 356,725.86

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Solution

The fourth proportional to 658,531.86, 908,778.33 and 356,725.86 is: 492,284.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,531.86 : 908,778.33 = 356,725.86 : x
  2. Step 2: Convert to fraction form
    658,531.86/908,778.33 = 356,725.86/x
  3. Step 3: Cross multiply
    658,531.86x = 908,778.33 × 356,725.86
  4. Step 4: Simplify right side
    658,531.86x = 324,184,731,318.61
  5. Step 5: Solve for x
    x = 324,184,731,318.61/658,531.86
  6. Step 6: Final answer
    x = 492,284.05

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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.