Home / 869,432.80-1,304,149.20-764,456.80

Finding the Fourth Proportional to 869,432.80, 1,304,149.20 and 764,456.80

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Solution

The fourth proportional to 869,432.80, 1,304,149.20 and 764,456.80 is: 1,146,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,432.80 : 1,304,149.20 = 764,456.80 : x
  2. Step 2: Convert to fraction form
    869,432.80/1,304,149.20 = 764,456.80/x
  3. Step 3: Cross multiply
    869,432.80x = 1,304,149.20 × 764,456.80
  4. Step 4: Simplify right side
    869,432.80x = 996,965,724,154.56
  5. Step 5: Solve for x
    x = 996,965,724,154.56/869,432.80
  6. Step 6: Final answer
    x = 1,146,685.20

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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.