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Finding the Fourth Proportional to 663,254, 915,297 and 361,454.48

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Solution

The fourth proportional to 663,254, 915,297 and 361,454.48 is: 498,810.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,254 : 915,297 = 361,454.48 : x
  2. Step 2: Convert to fraction form
    663,254/915,297 = 361,454.48/x
  3. Step 3: Cross multiply
    663,254x = 915,297 × 361,454.48
  4. Step 4: Simplify right side
    663,254x = 330,838,201,180.56
  5. Step 5: Solve for x
    x = 330,838,201,180.56/663,254
  6. Step 6: Final answer
    x = 498,810.71

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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.