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Finding the Fourth Proportional to 663,419.30, 994,844.63 and 308,396.30

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Solution

The fourth proportional to 663,419.30, 994,844.63 and 308,396.30 is: 462,462.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,419.30 : 994,844.63 = 308,396.30 : x
  2. Step 2: Convert to fraction form
    663,419.30/994,844.63 = 308,396.30/x
  3. Step 3: Cross multiply
    663,419.30x = 994,844.63 × 308,396.30
  4. Step 4: Simplify right side
    663,419.30x = 306,806,398,763.64
  5. Step 5: Solve for x
    x = 306,806,398,763.64/663,419.30
  6. Step 6: Final answer
    x = 462,462.28

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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.