Home / 782,319.43-1,079,415.66-442,787.68

Finding the Fourth Proportional to 782,319.43, 1,079,415.66 and 442,787.68

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Solution

The fourth proportional to 782,319.43, 1,079,415.66 and 442,787.68 is: 610,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,319.43 : 1,079,415.66 = 442,787.68 : x
  2. Step 2: Convert to fraction form
    782,319.43/1,079,415.66 = 442,787.68/x
  3. Step 3: Cross multiply
    782,319.43x = 1,079,415.66 × 442,787.68
  4. Step 4: Simplify right side
    782,319.43x = 477,951,955,847.07
  5. Step 5: Solve for x
    x = 477,951,955,847.07/782,319.43
  6. Step 6: Final answer
    x = 610,942.20

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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.