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Finding the Fourth Proportional to 489,525, 675,543.75 and 274,685.04

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Solution

The fourth proportional to 489,525, 675,543.75 and 274,685.04 is: 379,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,525 : 675,543.75 = 274,685.04 : x
  2. Step 2: Convert to fraction form
    489,525/675,543.75 = 274,685.04/x
  3. Step 3: Cross multiply
    489,525x = 675,543.75 × 274,685.04
  4. Step 4: Simplify right side
    489,525x = 185,561,761,990.50
  5. Step 5: Solve for x
    x = 185,561,761,990.50/489,525
  6. Step 6: Final answer
    x = 379,064.93

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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.