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Finding the Fourth Proportional to 672,290.60, 1,008,411.60 and 272,920.10

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Solution

The fourth proportional to 672,290.60, 1,008,411.60 and 272,920.10 is: 409,370.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,290.60 : 1,008,411.60 = 272,920.10 : x
  2. Step 2: Convert to fraction form
    672,290.60/1,008,411.60 = 272,920.10/x
  3. Step 3: Cross multiply
    672,290.60x = 1,008,411.60 × 272,920.10
  4. Step 4: Simplify right side
    672,290.60x = 275,215,794,713.16
  5. Step 5: Solve for x
    x = 275,215,794,713.16/672,290.60
  6. Step 6: Final answer
    x = 409,370.29

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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.