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Finding the Fourth Proportional to 547,396.60, 755,762.76 and 489,936.42

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Solution

The fourth proportional to 547,396.60, 755,762.76 and 489,936.42 is: 676,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,396.60 : 755,762.76 = 489,936.42 : x
  2. Step 2: Convert to fraction form
    547,396.60/755,762.76 = 489,936.42/x
  3. Step 3: Cross multiply
    547,396.60x = 755,762.76 × 489,936.42
  4. Step 4: Simplify right side
    547,396.60x = 370,275,694,775.22
  5. Step 5: Solve for x
    x = 370,275,694,775.22/547,396.60
  6. Step 6: Final answer
    x = 676,430.39

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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.