Home / 1,687,698.76-2,329,356.28-1,279,087.88

Finding the Fourth Proportional to 1,687,698.76, 2,329,356.28 and 1,279,087.88

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Solution

The fourth proportional to 1,687,698.76, 2,329,356.28 and 1,279,087.88 is: 1,765,392.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,698.76 : 2,329,356.28 = 1,279,087.88 : x
  2. Step 2: Convert to fraction form
    1,687,698.76/2,329,356.28 = 1,279,087.88/x
  3. Step 3: Cross multiply
    1,687,698.76x = 2,329,356.28 × 1,279,087.88
  4. Step 4: Simplify right side
    1,687,698.76x = 2,979,451,385,949.89
  5. Step 5: Solve for x
    x = 2,979,451,385,949.89/1,687,698.76
  6. Step 6: Final answer
    x = 1,765,392.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.