Home / 782,120.72-1,079,326.68-424,424.72

Finding the Fourth Proportional to 782,120.72, 1,079,326.68 and 424,424.72

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Solution

The fourth proportional to 782,120.72, 1,079,326.68 and 424,424.72 is: 585,706.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,120.72 : 1,079,326.68 = 424,424.72 : x
  2. Step 2: Convert to fraction form
    782,120.72/1,079,326.68 = 424,424.72/x
  3. Step 3: Cross multiply
    782,120.72x = 1,079,326.68 × 424,424.72
  4. Step 4: Simplify right side
    782,120.72x = 458,092,923,947.53
  5. Step 5: Solve for x
    x = 458,092,923,947.53/782,120.72
  6. Step 6: Final answer
    x = 585,706.16

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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.