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Finding the Fourth Proportional to 999,645.60, 1,497,135.60 and 979,600.80

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Solution

The fourth proportional to 999,645.60, 1,497,135.60 and 979,600.80 is: 1,467,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,645.60 : 1,497,135.60 = 979,600.80 : x
  2. Step 2: Convert to fraction form
    999,645.60/1,497,135.60 = 979,600.80/x
  3. Step 3: Cross multiply
    999,645.60x = 1,497,135.60 × 979,600.80
  4. Step 4: Simplify right side
    999,645.60x = 1,466,595,231,468.48
  5. Step 5: Solve for x
    x = 1,466,595,231,468.48/999,645.60
  6. Step 6: Final answer
    x = 1,467,115.18

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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.