Home / 819,981.24-1,229,122.98-398,733.72

Finding the Fourth Proportional to 819,981.24, 1,229,122.98 and 398,733.72

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Solution

The fourth proportional to 819,981.24, 1,229,122.98 and 398,733.72 is: 597,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,981.24 : 1,229,122.98 = 398,733.72 : x
  2. Step 2: Convert to fraction form
    819,981.24/1,229,122.98 = 398,733.72/x
  3. Step 3: Cross multiply
    819,981.24x = 1,229,122.98 × 398,733.72
  4. Step 4: Simplify right side
    819,981.24x = 490,092,778,152.89
  5. Step 5: Solve for x
    x = 490,092,778,152.89/819,981.24
  6. Step 6: Final answer
    x = 597,687.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.