Home / 2,728,489.20-4,092,733.80-931,431.30

Finding the Fourth Proportional to 2,728,489.20, 4,092,733.80 and 931,431.30

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Solution

The fourth proportional to 2,728,489.20, 4,092,733.80 and 931,431.30 is: 1,397,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728,489.20 : 4,092,733.80 = 931,431.30 : x
  2. Step 2: Convert to fraction form
    2,728,489.20/4,092,733.80 = 931,431.30/x
  3. Step 3: Cross multiply
    2,728,489.20x = 4,092,733.80 × 931,431.30
  4. Step 4: Simplify right side
    2,728,489.20x = 3,812,100,363,887.94
  5. Step 5: Solve for x
    x = 3,812,100,363,887.94/2,728,489.20
  6. Step 6: Final answer
    x = 1,397,146.95

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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.