Home / 782,379.12-1,079,683.80-442,956.72

Finding the Fourth Proportional to 782,379.12, 1,079,683.80 and 442,956.72

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Solution

The fourth proportional to 782,379.12, 1,079,683.80 and 442,956.72 is: 611,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,379.12 : 1,079,683.80 = 442,956.72 : x
  2. Step 2: Convert to fraction form
    782,379.12/1,079,683.80 = 442,956.72/x
  3. Step 3: Cross multiply
    782,379.12x = 1,079,683.80 × 442,956.72
  4. Step 4: Simplify right side
    782,379.12x = 478,253,194,685.14
  5. Step 5: Solve for x
    x = 478,253,194,685.14/782,379.12
  6. Step 6: Final answer
    x = 611,280.62

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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.