Home / 640,982.97-884,569.82-354,522.42

Finding the Fourth Proportional to 640,982.97, 884,569.82 and 354,522.42

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Solution

The fourth proportional to 640,982.97, 884,569.82 and 354,522.42 is: 489,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,982.97 : 884,569.82 = 354,522.42 : x
  2. Step 2: Convert to fraction form
    640,982.97/884,569.82 = 354,522.42/x
  3. Step 3: Cross multiply
    640,982.97x = 884,569.82 × 354,522.42
  4. Step 4: Simplify right side
    640,982.97x = 313,599,831,472.75
  5. Step 5: Solve for x
    x = 313,599,831,472.75/640,982.97
  6. Step 6: Final answer
    x = 489,248.30

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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.