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Finding the Fourth Proportional to 663,208.08, 994,930.32 and 308,622.48

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Solution

The fourth proportional to 663,208.08, 994,930.32 and 308,622.48 is: 462,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,208.08 : 994,930.32 = 308,622.48 : x
  2. Step 2: Convert to fraction form
    663,208.08/994,930.32 = 308,622.48/x
  3. Step 3: Cross multiply
    663,208.08x = 994,930.32 × 308,622.48
  4. Step 4: Simplify right side
    663,208.08x = 307,057,862,785.59
  5. Step 5: Solve for x
    x = 307,057,862,785.59/663,208.08
  6. Step 6: Final answer
    x = 462,988.72

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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.