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Finding the Fourth Proportional to 520,095.80, 779,711.70 and 220,806.20

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Solution

The fourth proportional to 520,095.80, 779,711.70 and 220,806.20 is: 331,025.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,095.80 : 779,711.70 = 220,806.20 : x
  2. Step 2: Convert to fraction form
    520,095.80/779,711.70 = 220,806.20/x
  3. Step 3: Cross multiply
    520,095.80x = 779,711.70 × 220,806.20
  4. Step 4: Simplify right side
    520,095.80x = 172,165,177,572.54
  5. Step 5: Solve for x
    x = 172,165,177,572.54/520,095.80
  6. Step 6: Final answer
    x = 331,025.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.