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Finding the Fourth Proportional to 748,990.56, 1,123,456.68 and 412,698

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Solution

The fourth proportional to 748,990.56, 1,123,456.68 and 412,698 is: 619,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,990.56 : 1,123,456.68 = 412,698 : x
  2. Step 2: Convert to fraction form
    748,990.56/1,123,456.68 = 412,698/x
  3. Step 3: Cross multiply
    748,990.56x = 1,123,456.68 × 412,698
  4. Step 4: Simplify right side
    748,990.56x = 463,648,324,922.64
  5. Step 5: Solve for x
    x = 463,648,324,922.64/748,990.56
  6. Step 6: Final answer
    x = 619,030.93

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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.