Home / 782,116.89-1,079,321.31-424,420.89

Finding the Fourth Proportional to 782,116.89, 1,079,321.31 and 424,420.89

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Solution

The fourth proportional to 782,116.89, 1,079,321.31 and 424,420.89 is: 585,700.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,116.89 : 1,079,321.31 = 424,420.89 : x
  2. Step 2: Convert to fraction form
    782,116.89/1,079,321.31 = 424,420.89/x
  3. Step 3: Cross multiply
    782,116.89x = 1,079,321.31 × 424,420.89
  4. Step 4: Simplify right side
    782,116.89x = 458,086,510,986.17
  5. Step 5: Solve for x
    x = 458,086,510,986.17/782,116.89
  6. Step 6: Final answer
    x = 585,700.83

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Double scale
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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.