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Finding the Fourth Proportional to 921,089.62, 1,380,107 and 560,168.80

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Solution

The fourth proportional to 921,089.62, 1,380,107 and 560,168.80 is: 839,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,089.62 : 1,380,107 = 560,168.80 : x
  2. Step 2: Convert to fraction form
    921,089.62/1,380,107 = 560,168.80/x
  3. Step 3: Cross multiply
    921,089.62x = 1,380,107 × 560,168.80
  4. Step 4: Simplify right side
    921,089.62x = 773,092,882,061.60
  5. Step 5: Solve for x
    x = 773,092,882,061.60/921,089.62
  6. Step 6: Final answer
    x = 839,324.28

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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.