Home / 1,279,167.80-1,918,725.35-426,301.38

Finding the Fourth Proportional to 1,279,167.80, 1,918,725.35 and 426,301.38

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Solution

The fourth proportional to 1,279,167.80, 1,918,725.35 and 426,301.38 is: 639,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,167.80 : 1,918,725.35 = 426,301.38 : x
  2. Step 2: Convert to fraction form
    1,279,167.80/1,918,725.35 = 426,301.38/x
  3. Step 3: Cross multiply
    1,279,167.80x = 1,918,725.35 × 426,301.38
  4. Step 4: Simplify right side
    1,279,167.80x = 817,955,262,414.48
  5. Step 5: Solve for x
    x = 817,955,262,414.48/1,279,167.80
  6. Step 6: Final answer
    x = 639,443.29

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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.