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Finding the Fourth Proportional to 709,863.65, 979,697.78 and 404,014.43

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Solution

The fourth proportional to 709,863.65, 979,697.78 and 404,014.43 is: 557,588.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,863.65 : 979,697.78 = 404,014.43 : x
  2. Step 2: Convert to fraction form
    709,863.65/979,697.78 = 404,014.43/x
  3. Step 3: Cross multiply
    709,863.65x = 979,697.78 × 404,014.43
  4. Step 4: Simplify right side
    709,863.65x = 395,812,044,375.77
  5. Step 5: Solve for x
    x = 395,812,044,375.77/709,863.65
  6. Step 6: Final answer
    x = 557,588.83

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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.