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Finding the Fourth Proportional to 605,062.59, 907,599.09 and 172,778.94

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Solution

The fourth proportional to 605,062.59, 907,599.09 and 172,778.94 is: 259,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,062.59 : 907,599.09 = 172,778.94 : x
  2. Step 2: Convert to fraction form
    605,062.59/907,599.09 = 172,778.94/x
  3. Step 3: Cross multiply
    605,062.59x = 907,599.09 × 172,778.94
  4. Step 4: Simplify right side
    605,062.59x = 156,814,008,715.17
  5. Step 5: Solve for x
    x = 156,814,008,715.17/605,062.59
  6. Step 6: Final answer
    x = 259,169.90

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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.