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Finding the Fourth Proportional to 645,388.55, 967,752.33 and 379,229.03

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Solution

The fourth proportional to 645,388.55, 967,752.33 and 379,229.03 is: 568,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,388.55 : 967,752.33 = 379,229.03 : x
  2. Step 2: Convert to fraction form
    645,388.55/967,752.33 = 379,229.03/x
  3. Step 3: Cross multiply
    645,388.55x = 967,752.33 × 379,229.03
  4. Step 4: Simplify right side
    645,388.55x = 366,999,777,386.14
  5. Step 5: Solve for x
    x = 366,999,777,386.14/645,388.55
  6. Step 6: Final answer
    x = 568,649.35

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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.