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Finding the Fourth Proportional to 547,395.91, 755,761.81 and 489,935.73

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Solution

The fourth proportional to 547,395.91, 755,761.81 and 489,935.73 is: 676,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,395.91 : 755,761.81 = 489,935.73 : x
  2. Step 2: Convert to fraction form
    547,395.91/755,761.81 = 489,935.73/x
  3. Step 3: Cross multiply
    547,395.91x = 755,761.81 × 489,935.73
  4. Step 4: Simplify right side
    547,395.91x = 370,274,710,974.23
  5. Step 5: Solve for x
    x = 370,274,710,974.23/547,395.91
  6. Step 6: Final answer
    x = 676,429.44

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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.