Home / 1,278,351.50-1,917,789.68-379,713.20

Finding the Fourth Proportional to 1,278,351.50, 1,917,789.68 and 379,713.20

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Solution

The fourth proportional to 1,278,351.50, 1,917,789.68 and 379,713.20 is: 569,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,351.50 : 1,917,789.68 = 379,713.20 : x
  2. Step 2: Convert to fraction form
    1,278,351.50/1,917,789.68 = 379,713.20/x
  3. Step 3: Cross multiply
    1,278,351.50x = 1,917,789.68 × 379,713.20
  4. Step 4: Simplify right side
    1,278,351.50x = 728,210,044,832.26
  5. Step 5: Solve for x
    x = 728,210,044,832.26/1,278,351.50
  6. Step 6: Final answer
    x = 569,647.74

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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.