Home / 782,121.90-1,079,328.22-424,425.90

Finding the Fourth Proportional to 782,121.90, 1,079,328.22 and 424,425.90

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Solution

The fourth proportional to 782,121.90, 1,079,328.22 and 424,425.90 is: 585,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,121.90 : 1,079,328.22 = 424,425.90 : x
  2. Step 2: Convert to fraction form
    782,121.90/1,079,328.22 = 424,425.90/x
  3. Step 3: Cross multiply
    782,121.90x = 1,079,328.22 × 424,425.90
  4. Step 4: Simplify right side
    782,121.90x = 458,094,851,168.90
  5. Step 5: Solve for x
    x = 458,094,851,168.90/782,121.90
  6. Step 6: Final answer
    x = 585,707.74

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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.