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Finding the Fourth Proportional to 485,736.30, 728,604.45 and 309,026.70

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Solution

The fourth proportional to 485,736.30, 728,604.45 and 309,026.70 is: 463,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,736.30 : 728,604.45 = 309,026.70 : x
  2. Step 2: Convert to fraction form
    485,736.30/728,604.45 = 309,026.70/x
  3. Step 3: Cross multiply
    485,736.30x = 728,604.45 × 309,026.70
  4. Step 4: Simplify right side
    485,736.30x = 225,158,228,788.82
  5. Step 5: Solve for x
    x = 225,158,228,788.82/485,736.30
  6. Step 6: Final answer
    x = 463,540.05

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Similar ratio
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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.