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Finding the Fourth Proportional to 658,280.31, 908,421.57 and 356,474.31

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Solution

The fourth proportional to 658,280.31, 908,421.57 and 356,474.31 is: 491,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,280.31 : 908,421.57 = 356,474.31 : x
  2. Step 2: Convert to fraction form
    658,280.31/908,421.57 = 356,474.31/x
  3. Step 3: Cross multiply
    658,280.31x = 908,421.57 × 356,474.31
  4. Step 4: Simplify right side
    658,280.31x = 323,828,952,354.87
  5. Step 5: Solve for x
    x = 323,828,952,354.87/658,280.31
  6. Step 6: Final answer
    x = 491,931.70

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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.