Home / 780,177.20-1,170,265.80-721,857.20

Finding the Fourth Proportional to 780,177.20, 1,170,265.80 and 721,857.20

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Solution

The fourth proportional to 780,177.20, 1,170,265.80 and 721,857.20 is: 1,082,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,177.20 : 1,170,265.80 = 721,857.20 : x
  2. Step 2: Convert to fraction form
    780,177.20/1,170,265.80 = 721,857.20/x
  3. Step 3: Cross multiply
    780,177.20x = 1,170,265.80 × 721,857.20
  4. Step 4: Simplify right side
    780,177.20x = 844,764,793,643.76
  5. Step 5: Solve for x
    x = 844,764,793,643.76/780,177.20
  6. Step 6: Final answer
    x = 1,082,785.80

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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.