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Finding the Fourth Proportional to 664,820.60, 996,939.30 and 265,328.60

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Solution

The fourth proportional to 664,820.60, 996,939.30 and 265,328.60 is: 397,876.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,820.60 : 996,939.30 = 265,328.60 : x
  2. Step 2: Convert to fraction form
    664,820.60/996,939.30 = 265,328.60/x
  3. Step 3: Cross multiply
    664,820.60x = 996,939.30 × 265,328.60
  4. Step 4: Simplify right side
    664,820.60x = 264,516,508,753.98
  5. Step 5: Solve for x
    x = 264,516,508,753.98/664,820.60
  6. Step 6: Final answer
    x = 397,876.52

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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.