Home / 782,407.60-1,078,174.20-555,417.52

Finding the Fourth Proportional to 782,407.60, 1,078,174.20 and 555,417.52

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Solution

The fourth proportional to 782,407.60, 1,078,174.20 and 555,417.52 is: 765,377.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,407.60 : 1,078,174.20 = 555,417.52 : x
  2. Step 2: Convert to fraction form
    782,407.60/1,078,174.20 = 555,417.52/x
  3. Step 3: Cross multiply
    782,407.60x = 1,078,174.20 × 555,417.52
  4. Step 4: Simplify right side
    782,407.60x = 598,836,840,291.98
  5. Step 5: Solve for x
    x = 598,836,840,291.98/782,407.60
  6. Step 6: Final answer
    x = 765,377.07

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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.