Home / 721,857.31-1,082,347.50-361,609.20

Finding the Fourth Proportional to 721,857.31, 1,082,347.50 and 361,609.20

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Solution

The fourth proportional to 721,857.31, 1,082,347.50 and 361,609.20 is: 542,194.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,857.31 : 1,082,347.50 = 361,609.20 : x
  2. Step 2: Convert to fraction form
    721,857.31/1,082,347.50 = 361,609.20/x
  3. Step 3: Cross multiply
    721,857.31x = 1,082,347.50 × 361,609.20
  4. Step 4: Simplify right side
    721,857.31x = 391,386,813,597
  5. Step 5: Solve for x
    x = 391,386,813,597/721,857.31
  6. Step 6: Final answer
    x = 542,194.15

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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.