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Finding the Fourth Proportional to 1,301,195.06, 1,795,648.92 and 728,235.20

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Solution

The fourth proportional to 1,301,195.06, 1,795,648.92 and 728,235.20 is: 1,004,964.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,195.06 : 1,795,648.92 = 728,235.20 : x
  2. Step 2: Convert to fraction form
    1,301,195.06/1,795,648.92 = 728,235.20/x
  3. Step 3: Cross multiply
    1,301,195.06x = 1,795,648.92 × 728,235.20
  4. Step 4: Simplify right side
    1,301,195.06x = 1,307,654,750,385.98
  5. Step 5: Solve for x
    x = 1,307,654,750,385.98/1,301,195.06
  6. Step 6: Final answer
    x = 1,004,964.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.