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Finding the Fourth Proportional to 891,711.84, 1,231,138.80 and 552,540

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Solution

The fourth proportional to 891,711.84, 1,231,138.80 and 552,540 is: 762,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,711.84 : 1,231,138.80 = 552,540 : x
  2. Step 2: Convert to fraction form
    891,711.84/1,231,138.80 = 552,540/x
  3. Step 3: Cross multiply
    891,711.84x = 1,231,138.80 × 552,540
  4. Step 4: Simplify right side
    891,711.84x = 680,253,432,552
  5. Step 5: Solve for x
    x = 680,253,432,552/891,711.84
  6. Step 6: Final answer
    x = 762,862.40

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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.