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Finding the Fourth Proportional to 663,113.25, 915,096.42 and 361,307.25

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Solution

The fourth proportional to 663,113.25, 915,096.42 and 361,307.25 is: 498,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,113.25 : 915,096.42 = 361,307.25 : x
  2. Step 2: Convert to fraction form
    663,113.25/915,096.42 = 361,307.25/x
  3. Step 3: Cross multiply
    663,113.25x = 915,096.42 × 361,307.25
  4. Step 4: Simplify right side
    663,113.25x = 330,630,970,995.05
  5. Step 5: Solve for x
    x = 330,630,970,995.05/663,113.25
  6. Step 6: Final answer
    x = 498,604.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.