Home / 1,378,123.78-2,067,178.51-353,449.28

Finding the Fourth Proportional to 1,378,123.78, 2,067,178.51 and 353,449.28

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Solution

The fourth proportional to 1,378,123.78, 2,067,178.51 and 353,449.28 is: 530,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,123.78 : 2,067,178.51 = 353,449.28 : x
  2. Step 2: Convert to fraction form
    1,378,123.78/2,067,178.51 = 353,449.28/x
  3. Step 3: Cross multiply
    1,378,123.78x = 2,067,178.51 × 353,449.28
  4. Step 4: Simplify right side
    1,378,123.78x = 730,642,755,990.97
  5. Step 5: Solve for x
    x = 730,642,755,990.97/1,378,123.78
  6. Step 6: Final answer
    x = 530,172.08

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1.5x scale

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.