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Finding the Fourth Proportional to 1,280,287.31, 1,766,775.86 and 699,497.97

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Solution

The fourth proportional to 1,280,287.31, 1,766,775.86 and 699,497.97 is: 965,295.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,287.31 : 1,766,775.86 = 699,497.97 : x
  2. Step 2: Convert to fraction form
    1,280,287.31/1,766,775.86 = 699,497.97/x
  3. Step 3: Cross multiply
    1,280,287.31x = 1,766,775.86 × 699,497.97
  4. Step 4: Simplify right side
    1,280,287.31x = 1,235,856,124,017.51
  5. Step 5: Solve for x
    x = 1,235,856,124,017.51/1,280,287.31
  6. Step 6: Final answer
    x = 965,295.93

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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.