Home / 782,312.58-1,079,406.27-442,780.83

Finding the Fourth Proportional to 782,312.58, 1,079,406.27 and 442,780.83

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Solution

The fourth proportional to 782,312.58, 1,079,406.27 and 442,780.83 is: 610,932.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,312.58 : 1,079,406.27 = 442,780.83 : x
  2. Step 2: Convert to fraction form
    782,312.58/1,079,406.27 = 442,780.83/x
  3. Step 3: Cross multiply
    782,312.58x = 1,079,406.27 × 442,780.83
  4. Step 4: Simplify right side
    782,312.58x = 477,940,404,137.80
  5. Step 5: Solve for x
    x = 477,940,404,137.80/782,312.58
  6. Step 6: Final answer
    x = 610,932.79

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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.