Home / 900,138.75-1,350,872.73-426,825.78

Finding the Fourth Proportional to 900,138.75, 1,350,872.73 and 426,825.78

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Solution

The fourth proportional to 900,138.75, 1,350,872.73 and 426,825.78 is: 640,553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,138.75 : 1,350,872.73 = 426,825.78 : x
  2. Step 2: Convert to fraction form
    900,138.75/1,350,872.73 = 426,825.78/x
  3. Step 3: Cross multiply
    900,138.75x = 1,350,872.73 × 426,825.78
  4. Step 4: Simplify right side
    900,138.75x = 576,587,306,662.98
  5. Step 5: Solve for x
    x = 576,587,306,662.98/900,138.75
  6. Step 6: Final answer
    x = 640,553.81

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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.