Home / 1,278,866.61-1,918,081.83-425,841.44

Finding the Fourth Proportional to 1,278,866.61, 1,918,081.83 and 425,841.44

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Solution

The fourth proportional to 1,278,866.61, 1,918,081.83 and 425,841.44 is: 638,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,866.61 : 1,918,081.83 = 425,841.44 : x
  2. Step 2: Convert to fraction form
    1,278,866.61/1,918,081.83 = 425,841.44/x
  3. Step 3: Cross multiply
    1,278,866.61x = 1,918,081.83 × 425,841.44
  4. Step 4: Simplify right side
    1,278,866.61x = 816,798,733,320.24
  5. Step 5: Solve for x
    x = 816,798,733,320.24/1,278,866.61
  6. Step 6: Final answer
    x = 638,689.55

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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.