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Finding the Fourth Proportional to 485,844.02, 728,766.05 and 260,895.02

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Solution

The fourth proportional to 485,844.02, 728,766.05 and 260,895.02 is: 391,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,844.02 : 728,766.05 = 260,895.02 : x
  2. Step 2: Convert to fraction form
    485,844.02/728,766.05 = 260,895.02/x
  3. Step 3: Cross multiply
    485,844.02x = 728,766.05 × 260,895.02
  4. Step 4: Simplify right side
    485,844.02x = 190,131,433,190.07
  5. Step 5: Solve for x
    x = 190,131,433,190.07/485,844.02
  6. Step 6: Final answer
    x = 391,342.54

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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.