Home / 782,298.50-1,079,386.82-442,766.76

Finding the Fourth Proportional to 782,298.50, 1,079,386.82 and 442,766.76

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Solution

The fourth proportional to 782,298.50, 1,079,386.82 and 442,766.76 is: 610,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,298.50 : 1,079,386.82 = 442,766.76 : x
  2. Step 2: Convert to fraction form
    782,298.50/1,079,386.82 = 442,766.76/x
  3. Step 3: Cross multiply
    782,298.50x = 1,079,386.82 × 442,766.76
  4. Step 4: Simplify right side
    782,298.50x = 477,916,605,078.10
  5. Step 5: Solve for x
    x = 477,916,605,078.10/782,298.50
  6. Step 6: Final answer
    x = 610,913.36

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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.