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Finding the Fourth Proportional to 663,264.24, 915,304.68 and 361,458

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Solution

The fourth proportional to 663,264.24, 915,304.68 and 361,458 is: 498,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,264.24 : 915,304.68 = 361,458 : x
  2. Step 2: Convert to fraction form
    663,264.24/915,304.68 = 361,458/x
  3. Step 3: Cross multiply
    663,264.24x = 915,304.68 × 361,458
  4. Step 4: Simplify right side
    663,264.24x = 330,844,199,023.44
  5. Step 5: Solve for x
    x = 330,844,199,023.44/663,264.24
  6. Step 6: Final answer
    x = 498,812.06

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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.