Home / 1,279,150.76-1,918,083.54-425,920.80

Finding the Fourth Proportional to 1,279,150.76, 1,918,083.54 and 425,920.80

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Solution

The fourth proportional to 1,279,150.76, 1,918,083.54 and 425,920.80 is: 638,667.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,150.76 : 1,918,083.54 = 425,920.80 : x
  2. Step 2: Convert to fraction form
    1,279,150.76/1,918,083.54 = 425,920.80/x
  3. Step 3: Cross multiply
    1,279,150.76x = 1,918,083.54 × 425,920.80
  4. Step 4: Simplify right side
    1,279,150.76x = 816,951,675,823.63
  5. Step 5: Solve for x
    x = 816,951,675,823.63/1,279,150.76
  6. Step 6: Final answer
    x = 638,667.23

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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.