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Finding the Fourth Proportional to 891,601.20, 1,337,401.80 and 513,687.60

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Solution

The fourth proportional to 891,601.20, 1,337,401.80 and 513,687.60 is: 770,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,601.20 : 1,337,401.80 = 513,687.60 : x
  2. Step 2: Convert to fraction form
    891,601.20/1,337,401.80 = 513,687.60/x
  3. Step 3: Cross multiply
    891,601.20x = 1,337,401.80 × 513,687.60
  4. Step 4: Simplify right side
    891,601.20x = 687,006,720,877.68
  5. Step 5: Solve for x
    x = 687,006,720,877.68/891,601.20
  6. Step 6: Final answer
    x = 770,531.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.