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Finding the Fourth Proportional to 500,500.62, 690,708.06 and 274,146.12

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Solution

The fourth proportional to 500,500.62, 690,708.06 and 274,146.12 is: 378,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,500.62 : 690,708.06 = 274,146.12 : x
  2. Step 2: Convert to fraction form
    500,500.62/690,708.06 = 274,146.12/x
  3. Step 3: Cross multiply
    500,500.62x = 690,708.06 × 274,146.12
  4. Step 4: Simplify right side
    500,500.62x = 189,354,934,701.73
  5. Step 5: Solve for x
    x = 189,354,934,701.73/500,500.62
  6. Step 6: Final answer
    x = 378,331.07

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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.