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Finding the Fourth Proportional to 547,394.67, 755,760.09 and 489,934.49

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Solution

The fourth proportional to 547,394.67, 755,760.09 and 489,934.49 is: 676,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,394.67 : 755,760.09 = 489,934.49 : x
  2. Step 2: Convert to fraction form
    547,394.67/755,760.09 = 489,934.49/x
  3. Step 3: Cross multiply
    547,394.67x = 755,760.09 × 489,934.49
  4. Step 4: Simplify right side
    547,394.67x = 370,272,930,477.70
  5. Step 5: Solve for x
    x = 370,272,930,477.70/547,394.67
  6. Step 6: Final answer
    x = 676,427.72

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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.