Home / 1,378,562.20-2,067,908.10-431,963.80

Finding the Fourth Proportional to 1,378,562.20, 2,067,908.10 and 431,963.80

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Solution

The fourth proportional to 1,378,562.20, 2,067,908.10 and 431,963.80 is: 647,966.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,562.20 : 2,067,908.10 = 431,963.80 : x
  2. Step 2: Convert to fraction form
    1,378,562.20/2,067,908.10 = 431,963.80/x
  3. Step 3: Cross multiply
    1,378,562.20x = 2,067,908.10 × 431,963.80
  4. Step 4: Simplify right side
    1,378,562.20x = 893,261,440,926.78
  5. Step 5: Solve for x
    x = 893,261,440,926.78/1,378,562.20
  6. Step 6: Final answer
    x = 647,966.00

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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.