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Finding the Fourth Proportional to 436,278.70, 654,418.05 and 436,278.70

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Solution

The fourth proportional to 436,278.70, 654,418.05 and 436,278.70 is: 654,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,278.70 : 654,418.05 = 436,278.70 : x
  2. Step 2: Convert to fraction form
    436,278.70/654,418.05 = 436,278.70/x
  3. Step 3: Cross multiply
    436,278.70x = 654,418.05 × 436,278.70
  4. Step 4: Simplify right side
    436,278.70x = 285,508,656,110.54
  5. Step 5: Solve for x
    x = 285,508,656,110.54/436,278.70
  6. Step 6: Final answer
    x = 654,418.05

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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.