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Finding the Fourth Proportional to 485,466.72, 728,449.65 and 372,341.25

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Solution

The fourth proportional to 485,466.72, 728,449.65 and 372,341.25 is: 558,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,466.72 : 728,449.65 = 372,341.25 : x
  2. Step 2: Convert to fraction form
    485,466.72/728,449.65 = 372,341.25/x
  3. Step 3: Cross multiply
    485,466.72x = 728,449.65 × 372,341.25
  4. Step 4: Simplify right side
    485,466.72x = 271,231,853,243.06
  5. Step 5: Solve for x
    x = 271,231,853,243.06/485,466.72
  6. Step 6: Final answer
    x = 558,703.29

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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.