Home / 782,372.70-1,079,601.75-442,840.95

Finding the Fourth Proportional to 782,372.70, 1,079,601.75 and 442,840.95

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Solution

The fourth proportional to 782,372.70, 1,079,601.75 and 442,840.95 is: 611,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,372.70 : 1,079,601.75 = 442,840.95 : x
  2. Step 2: Convert to fraction form
    782,372.70/1,079,601.75 = 442,840.95/x
  3. Step 3: Cross multiply
    782,372.70x = 1,079,601.75 × 442,840.95
  4. Step 4: Simplify right side
    782,372.70x = 478,091,864,591.66
  5. Step 5: Solve for x
    x = 478,091,864,591.66/782,372.70
  6. Step 6: Final answer
    x = 611,079.43

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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.