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Finding the Fourth Proportional to 891,762.34, 1,337,644.56 and 379,294.78

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Solution

The fourth proportional to 891,762.34, 1,337,644.56 and 379,294.78 is: 568,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,762.34 : 1,337,644.56 = 379,294.78 : x
  2. Step 2: Convert to fraction form
    891,762.34/1,337,644.56 = 379,294.78/x
  3. Step 3: Cross multiply
    891,762.34x = 1,337,644.56 × 379,294.78
  4. Step 4: Simplify right side
    891,762.34x = 507,361,599,103.40
  5. Step 5: Solve for x
    x = 507,361,599,103.40/891,762.34
  6. Step 6: Final answer
    x = 568,942.62

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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.