Home / 812,124.68-1,120,718.46-449,540.74

Finding the Fourth Proportional to 812,124.68, 1,120,718.46 and 449,540.74

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Solution

The fourth proportional to 812,124.68, 1,120,718.46 and 449,540.74 is: 620,358.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,124.68 : 1,120,718.46 = 449,540.74 : x
  2. Step 2: Convert to fraction form
    812,124.68/1,120,718.46 = 449,540.74/x
  3. Step 3: Cross multiply
    812,124.68x = 1,120,718.46 × 449,540.74
  4. Step 4: Simplify right side
    812,124.68x = 503,808,605,840.06
  5. Step 5: Solve for x
    x = 503,808,605,840.06/812,124.68
  6. Step 6: Final answer
    x = 620,358.69

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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.