Home / 818,930.76-1,129,522.88-542,789.20

Finding the Fourth Proportional to 818,930.76, 1,129,522.88 and 542,789.20

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Solution

The fourth proportional to 818,930.76, 1,129,522.88 and 542,789.20 is: 748,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,930.76 : 1,129,522.88 = 542,789.20 : x
  2. Step 2: Convert to fraction form
    818,930.76/1,129,522.88 = 542,789.20/x
  3. Step 3: Cross multiply
    818,930.76x = 1,129,522.88 × 542,789.20
  4. Step 4: Simplify right side
    818,930.76x = 613,092,820,416.90
  5. Step 5: Solve for x
    x = 613,092,820,416.90/818,930.76
  6. Step 6: Final answer
    x = 748,650.37

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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.