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Finding the Fourth Proportional to 485,842.02, 728,763.05 and 260,893.02

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Solution

The fourth proportional to 485,842.02, 728,763.05 and 260,893.02 is: 391,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,842.02 : 728,763.05 = 260,893.02 : x
  2. Step 2: Convert to fraction form
    485,842.02/728,763.05 = 260,893.02/x
  3. Step 3: Cross multiply
    485,842.02x = 728,763.05 × 260,893.02
  4. Step 4: Simplify right side
    485,842.02x = 190,129,192,978.91
  5. Step 5: Solve for x
    x = 190,129,192,978.91/485,842.02
  6. Step 6: Final answer
    x = 391,339.54

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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.