Home / 782,042.88-1,079,087.76-455,424.96

Finding the Fourth Proportional to 782,042.88, 1,079,087.76 and 455,424.96

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Solution

The fourth proportional to 782,042.88, 1,079,087.76 and 455,424.96 is: 628,409.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,042.88 : 1,079,087.76 = 455,424.96 : x
  2. Step 2: Convert to fraction form
    782,042.88/1,079,087.76 = 455,424.96/x
  3. Step 3: Cross multiply
    782,042.88x = 1,079,087.76 × 455,424.96
  4. Step 4: Simplify right side
    782,042.88x = 491,443,499,934.49
  5. Step 5: Solve for x
    x = 491,443,499,934.49/782,042.88
  6. Step 6: Final answer
    x = 628,409.92

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1.5x scale

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.