Home / 812,841.20-1,220,048.76-392,412.08

Finding the Fourth Proportional to 812,841.20, 1,220,048.76 and 392,412.08

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Solution

The fourth proportional to 812,841.20, 1,220,048.76 and 392,412.08 is: 588,998.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,841.20 : 1,220,048.76 = 392,412.08 : x
  2. Step 2: Convert to fraction form
    812,841.20/1,220,048.76 = 392,412.08/x
  3. Step 3: Cross multiply
    812,841.20x = 1,220,048.76 × 392,412.08
  4. Step 4: Simplify right side
    812,841.20x = 478,761,871,613.02
  5. Step 5: Solve for x
    x = 478,761,871,613.02/812,841.20
  6. Step 6: Final answer
    x = 588,998.04

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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.