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Finding the Fourth Proportional to 663,268.69, 915,311.70 and 361,462.69

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Solution

The fourth proportional to 663,268.69, 915,311.70 and 361,462.69 is: 498,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,268.69 : 915,311.70 = 361,462.69 : x
  2. Step 2: Convert to fraction form
    663,268.69/915,311.70 = 361,462.69/x
  3. Step 3: Cross multiply
    663,268.69x = 915,311.70 × 361,462.69
  4. Step 4: Simplify right side
    663,268.69x = 330,851,026,982.19
  5. Step 5: Solve for x
    x = 330,851,026,982.19/663,268.69
  6. Step 6: Final answer
    x = 498,819.01

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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.