Home / 663,943.80-995,786.10-220,711.80

Finding the Fourth Proportional to 663,943.80, 995,786.10 and 220,711.80

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Solution

The fourth proportional to 663,943.80, 995,786.10 and 220,711.80 is: 331,024.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,943.80 : 995,786.10 = 220,711.80 : x
  2. Step 2: Convert to fraction form
    663,943.80/995,786.10 = 220,711.80/x
  3. Step 3: Cross multiply
    663,943.80x = 995,786.10 × 220,711.80
  4. Step 4: Simplify right side
    663,943.80x = 219,781,742,545.98
  5. Step 5: Solve for x
    x = 219,781,742,545.98/663,943.80
  6. Step 6: Final answer
    x = 331,024.62

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Double scale
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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.