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Finding the Fourth Proportional to 606,972.70, 910,372.65 and 207,631.90

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Solution

The fourth proportional to 606,972.70, 910,372.65 and 207,631.90 is: 311,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,972.70 : 910,372.65 = 207,631.90 : x
  2. Step 2: Convert to fraction form
    606,972.70/910,372.65 = 207,631.90/x
  3. Step 3: Cross multiply
    606,972.70x = 910,372.65 × 207,631.90
  4. Step 4: Simplify right side
    606,972.70x = 189,022,403,027.54
  5. Step 5: Solve for x
    x = 189,022,403,027.54/606,972.70
  6. Step 6: Final answer
    x = 311,418.29

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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.