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Finding the Fourth Proportional to 672,310.60, 1,008,441.60 and 272,940.10

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Solution

The fourth proportional to 672,310.60, 1,008,441.60 and 272,940.10 is: 409,400.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,310.60 : 1,008,441.60 = 272,940.10 : x
  2. Step 2: Convert to fraction form
    672,310.60/1,008,441.60 = 272,940.10/x
  3. Step 3: Cross multiply
    672,310.60x = 1,008,441.60 × 272,940.10
  4. Step 4: Simplify right side
    672,310.60x = 275,244,151,148.16
  5. Step 5: Solve for x
    x = 275,244,151,148.16/672,310.60
  6. Step 6: Final answer
    x = 409,400.28

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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.