Home / 1,387,843.72-2,080,235.22-907,872.28

Finding the Fourth Proportional to 1,387,843.72, 2,080,235.22 and 907,872.28

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Solution

The fourth proportional to 1,387,843.72, 2,080,235.22 and 907,872.28 is: 1,360,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,843.72 : 2,080,235.22 = 907,872.28 : x
  2. Step 2: Convert to fraction form
    1,387,843.72/2,080,235.22 = 907,872.28/x
  3. Step 3: Cross multiply
    1,387,843.72x = 2,080,235.22 × 907,872.28
  4. Step 4: Simplify right side
    1,387,843.72x = 1,888,587,892,117.70
  5. Step 5: Solve for x
    x = 1,888,587,892,117.70/1,387,843.72
  6. Step 6: Final answer
    x = 1,360,807.32

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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.