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Finding the Fourth Proportional to 663,516.80, 995,080.80 and 308,445.20

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Solution

The fourth proportional to 663,516.80, 995,080.80 and 308,445.20 is: 462,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,516.80 : 995,080.80 = 308,445.20 : x
  2. Step 2: Convert to fraction form
    663,516.80/995,080.80 = 308,445.20/x
  3. Step 3: Cross multiply
    663,516.80x = 995,080.80 × 308,445.20
  4. Step 4: Simplify right side
    663,516.80x = 306,927,896,372.16
  5. Step 5: Solve for x
    x = 306,927,896,372.16/663,516.80
  6. Step 6: Final answer
    x = 462,577.43

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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.