Home / 1,278,403.76-1,917,107.28-479,249.25

Finding the Fourth Proportional to 1,278,403.76, 1,917,107.28 and 479,249.25

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Solution

The fourth proportional to 1,278,403.76, 1,917,107.28 and 479,249.25 is: 718,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,403.76 : 1,917,107.28 = 479,249.25 : x
  2. Step 2: Convert to fraction form
    1,278,403.76/1,917,107.28 = 479,249.25/x
  3. Step 3: Cross multiply
    1,278,403.76x = 1,917,107.28 × 479,249.25
  4. Step 4: Simplify right side
    1,278,403.76x = 918,772,226,109.54
  5. Step 5: Solve for x
    x = 918,772,226,109.54/1,278,403.76
  6. Step 6: Final answer
    x = 718,687.05

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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.