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Finding the Fourth Proportional to 500,459.92, 690,631.52 and 271,013.55

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Solution

The fourth proportional to 500,459.92, 690,631.52 and 271,013.55 is: 373,996.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,459.92 : 690,631.52 = 271,013.55 : x
  2. Step 2: Convert to fraction form
    500,459.92/690,631.52 = 271,013.55/x
  3. Step 3: Cross multiply
    500,459.92x = 690,631.52 × 271,013.55
  4. Step 4: Simplify right side
    500,459.92x = 187,170,496,032.16
  5. Step 5: Solve for x
    x = 187,170,496,032.16/500,459.92
  6. Step 6: Final answer
    x = 373,996.98

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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.