Home / 1,278,402.82-1,917,105.87-479,248.31

Finding the Fourth Proportional to 1,278,402.82, 1,917,105.87 and 479,248.31

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Solution

The fourth proportional to 1,278,402.82, 1,917,105.87 and 479,248.31 is: 718,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,402.82 : 1,917,105.87 = 479,248.31 : x
  2. Step 2: Convert to fraction form
    1,278,402.82/1,917,105.87 = 479,248.31/x
  3. Step 3: Cross multiply
    1,278,402.82x = 1,917,105.87 × 479,248.31
  4. Step 4: Simplify right side
    1,278,402.82x = 918,769,754,878.53
  5. Step 5: Solve for x
    x = 918,769,754,878.53/1,278,402.82
  6. Step 6: Final answer
    x = 718,685.65

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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.