Home / 709,910.28-979,560.52-419,481.40

Finding the Fourth Proportional to 709,910.28, 979,560.52 and 419,481.40

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Solution

The fourth proportional to 709,910.28, 979,560.52 and 419,481.40 is: 578,815.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,910.28 : 979,560.52 = 419,481.40 : x
  2. Step 2: Convert to fraction form
    709,910.28/979,560.52 = 419,481.40/x
  3. Step 3: Cross multiply
    709,910.28x = 979,560.52 × 419,481.40
  4. Step 4: Simplify right side
    709,910.28x = 410,907,418,314.33
  5. Step 5: Solve for x
    x = 410,907,418,314.33/709,910.28
  6. Step 6: Final answer
    x = 578,815.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.