Home / 782,121.72-1,079,328.06-424,425.72

Finding the Fourth Proportional to 782,121.72, 1,079,328.06 and 424,425.72

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Solution

The fourth proportional to 782,121.72, 1,079,328.06 and 424,425.72 is: 585,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,121.72 : 1,079,328.06 = 424,425.72 : x
  2. Step 2: Convert to fraction form
    782,121.72/1,079,328.06 = 424,425.72/x
  3. Step 3: Cross multiply
    782,121.72x = 1,079,328.06 × 424,425.72
  4. Step 4: Simplify right side
    782,121.72x = 458,094,588,981.70
  5. Step 5: Solve for x
    x = 458,094,588,981.70/782,121.72
  6. Step 6: Final answer
    x = 585,707.54

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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.