Home / 1,387,272.20-2,080,908.30-715,425.80

Finding the Fourth Proportional to 1,387,272.20, 2,080,908.30 and 715,425.80

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Solution

The fourth proportional to 1,387,272.20, 2,080,908.30 and 715,425.80 is: 1,073,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,272.20 : 2,080,908.30 = 715,425.80 : x
  2. Step 2: Convert to fraction form
    1,387,272.20/2,080,908.30 = 715,425.80/x
  3. Step 3: Cross multiply
    1,387,272.20x = 2,080,908.30 × 715,425.80
  4. Step 4: Simplify right side
    1,387,272.20x = 1,488,735,485,254.14
  5. Step 5: Solve for x
    x = 1,488,735,485,254.14/1,387,272.20
  6. Step 6: Final answer
    x = 1,073,138.70

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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.