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Finding the Fourth Proportional to 748,980, 1,123,470 and 223,668

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Solution

The fourth proportional to 748,980, 1,123,470 and 223,668 is: 335,502

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,980 : 1,123,470 = 223,668 : x
  2. Step 2: Convert to fraction form
    748,980/1,123,470 = 223,668/x
  3. Step 3: Cross multiply
    748,980x = 1,123,470 × 223,668
  4. Step 4: Simplify right side
    748,980x = 251,284,287,960
  5. Step 5: Solve for x
    x = 251,284,287,960/748,980
  6. Step 6: Final answer
    x = 335,502

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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.