Home / 1,327,406.52-1,990,940.28-428,754.88

Finding the Fourth Proportional to 1,327,406.52, 1,990,940.28 and 428,754.88

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Solution

The fourth proportional to 1,327,406.52, 1,990,940.28 and 428,754.88 is: 643,077.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,406.52 : 1,990,940.28 = 428,754.88 : x
  2. Step 2: Convert to fraction form
    1,327,406.52/1,990,940.28 = 428,754.88/x
  3. Step 3: Cross multiply
    1,327,406.52x = 1,990,940.28 × 428,754.88
  4. Step 4: Simplify right side
    1,327,406.52x = 853,625,360,838.57
  5. Step 5: Solve for x
    x = 853,625,360,838.57/1,327,406.52
  6. Step 6: Final answer
    x = 643,077.57

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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.