Home / 1,387,104.20-2,079,344.10-818,921.60

Finding the Fourth Proportional to 1,387,104.20, 2,079,344.10 and 818,921.60

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Solution

The fourth proportional to 1,387,104.20, 2,079,344.10 and 818,921.60 is: 1,227,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,104.20 : 2,079,344.10 = 818,921.60 : x
  2. Step 2: Convert to fraction form
    1,387,104.20/2,079,344.10 = 818,921.60/x
  3. Step 3: Cross multiply
    1,387,104.20x = 2,079,344.10 × 818,921.60
  4. Step 4: Simplify right side
    1,387,104.20x = 1,702,819,797,322.56
  5. Step 5: Solve for x
    x = 1,702,819,797,322.56/1,387,104.20
  6. Step 6: Final answer
    x = 1,227,607.70

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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.