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Finding the Fourth Proportional to 547,396.91, 755,763.19 and 489,936.73

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Solution

The fourth proportional to 547,396.91, 755,763.19 and 489,936.73 is: 676,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,396.91 : 755,763.19 = 489,936.73 : x
  2. Step 2: Convert to fraction form
    547,396.91/755,763.19 = 489,936.73/x
  3. Step 3: Cross multiply
    547,396.91x = 755,763.19 × 489,936.73
  4. Step 4: Simplify right side
    547,396.91x = 370,276,145,962.97
  5. Step 5: Solve for x
    x = 370,276,145,962.97/547,396.91
  6. Step 6: Final answer
    x = 676,430.83

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1.5x scale

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.