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Finding the Fourth Proportional to 500,456.57, 690,630.44 and 271,015.67

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Solution

The fourth proportional to 500,456.57, 690,630.44 and 271,015.67 is: 374,001.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,456.57 : 690,630.44 = 271,015.67 : x
  2. Step 2: Convert to fraction form
    500,456.57/690,630.44 = 271,015.67/x
  3. Step 3: Cross multiply
    500,456.57x = 690,630.44 × 271,015.67
  4. Step 4: Simplify right side
    500,456.57x = 187,171,666,610.76
  5. Step 5: Solve for x
    x = 187,171,666,610.76/500,456.57
  6. Step 6: Final answer
    x = 374,001.82

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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.