Home / 436,442.20-654,664.10-136,945.78

Finding the Fourth Proportional to 436,442.20, 654,664.10 and 136,945.78

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Solution

The fourth proportional to 436,442.20, 654,664.10 and 136,945.78 is: 205,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,442.20 : 654,664.10 = 136,945.78 : x
  2. Step 2: Convert to fraction form
    436,442.20/654,664.10 = 136,945.78/x
  3. Step 3: Cross multiply
    436,442.20x = 654,664.10 × 136,945.78
  4. Step 4: Simplify right side
    436,442.20x = 89,653,485,812.50
  5. Step 5: Solve for x
    x = 89,653,485,812.50/436,442.20
  6. Step 6: Final answer
    x = 205,418.92

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1.5x scale

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.