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Finding the Fourth Proportional to 836,493.80, 1,254,279.90 and 275,239.40

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Solution

The fourth proportional to 836,493.80, 1,254,279.90 and 275,239.40 is: 412,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,493.80 : 1,254,279.90 = 275,239.40 : x
  2. Step 2: Convert to fraction form
    836,493.80/1,254,279.90 = 275,239.40/x
  3. Step 3: Cross multiply
    836,493.80x = 1,254,279.90 × 275,239.40
  4. Step 4: Simplify right side
    836,493.80x = 345,227,247,108.06
  5. Step 5: Solve for x
    x = 345,227,247,108.06/836,493.80
  6. Step 6: Final answer
    x = 412,707.48

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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.