Home / 1,278,404.62-1,917,108.78-479,250.25

Finding the Fourth Proportional to 1,278,404.62, 1,917,108.78 and 479,250.25

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Solution

The fourth proportional to 1,278,404.62, 1,917,108.78 and 479,250.25 is: 718,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,404.62 : 1,917,108.78 = 479,250.25 : x
  2. Step 2: Convert to fraction form
    1,278,404.62/1,917,108.78 = 479,250.25/x
  3. Step 3: Cross multiply
    1,278,404.62x = 1,917,108.78 × 479,250.25
  4. Step 4: Simplify right side
    1,278,404.62x = 918,774,862,092.20
  5. Step 5: Solve for x
    x = 918,774,862,092.20/1,278,404.62
  6. Step 6: Final answer
    x = 718,688.63

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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.