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Finding the Fourth Proportional to 489,411.30, 675,454.92 and 274,565.04

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Solution

The fourth proportional to 489,411.30, 675,454.92 and 274,565.04 is: 378,937.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,411.30 : 675,454.92 = 274,565.04 : x
  2. Step 2: Convert to fraction form
    489,411.30/675,454.92 = 274,565.04/x
  3. Step 3: Cross multiply
    489,411.30x = 675,454.92 × 274,565.04
  4. Step 4: Simplify right side
    489,411.30x = 185,456,307,128.00
  5. Step 5: Solve for x
    x = 185,456,307,128.00/489,411.30
  6. Step 6: Final answer
    x = 378,937.53

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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.