Home / 709,819.40-979,537.92-403,889.16

Finding the Fourth Proportional to 709,819.40, 979,537.92 and 403,889.16

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Solution

The fourth proportional to 709,819.40, 979,537.92 and 403,889.16 is: 557,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,819.40 : 979,537.92 = 403,889.16 : x
  2. Step 2: Convert to fraction form
    709,819.40/979,537.92 = 403,889.16/x
  3. Step 3: Cross multiply
    709,819.40x = 979,537.92 × 403,889.16
  4. Step 4: Simplify right side
    709,819.40x = 395,624,747,696.95
  5. Step 5: Solve for x
    x = 395,624,747,696.95/709,819.40
  6. Step 6: Final answer
    x = 557,359.73

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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.