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Finding the Fourth Proportional to 494,638.48, 682,627.56 and 313,283.80

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Solution

The fourth proportional to 494,638.48, 682,627.56 and 313,283.80 is: 432,348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,638.48 : 682,627.56 = 313,283.80 : x
  2. Step 2: Convert to fraction form
    494,638.48/682,627.56 = 313,283.80/x
  3. Step 3: Cross multiply
    494,638.48x = 682,627.56 × 313,283.80
  4. Step 4: Simplify right side
    494,638.48x = 213,856,155,981.53
  5. Step 5: Solve for x
    x = 213,856,155,981.53/494,638.48
  6. Step 6: Final answer
    x = 432,348.40

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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.