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Finding the Fourth Proportional to 653,311.35, 979,662.27 and 248,578.90

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Solution

The fourth proportional to 653,311.35, 979,662.27 and 248,578.90 is: 372,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,311.35 : 979,662.27 = 248,578.90 : x
  2. Step 2: Convert to fraction form
    653,311.35/979,662.27 = 248,578.90/x
  3. Step 3: Cross multiply
    653,311.35x = 979,662.27 × 248,578.90
  4. Step 4: Simplify right side
    653,311.35x = 243,523,367,859.13
  5. Step 5: Solve for x
    x = 243,523,367,859.13/653,311.35
  6. Step 6: Final answer
    x = 372,752.39

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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.