Home / 516,779.40-775,169.12-161,821.20

Finding the Fourth Proportional to 516,779.40, 775,169.12 and 161,821.20

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Solution

The fourth proportional to 516,779.40, 775,169.12 and 161,821.20 is: 242,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,779.40 : 775,169.12 = 161,821.20 : x
  2. Step 2: Convert to fraction form
    516,779.40/775,169.12 = 161,821.20/x
  3. Step 3: Cross multiply
    516,779.40x = 775,169.12 × 161,821.20
  4. Step 4: Simplify right side
    516,779.40x = 125,438,797,201.34
  5. Step 5: Solve for x
    x = 125,438,797,201.34/516,779.40
  6. Step 6: Final answer
    x = 242,731.81

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Similar ratio
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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.