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Finding the Fourth Proportional to 911,010.40, 1,365,640.80 and 708,494.20

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Solution

The fourth proportional to 911,010.40, 1,365,640.80 and 708,494.20 is: 1,062,060.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,010.40 : 1,365,640.80 = 708,494.20 : x
  2. Step 2: Convert to fraction form
    911,010.40/1,365,640.80 = 708,494.20/x
  3. Step 3: Cross multiply
    911,010.40x = 1,365,640.80 × 708,494.20
  4. Step 4: Simplify right side
    911,010.40x = 967,548,586,083.36
  5. Step 5: Solve for x
    x = 967,548,586,083.36/911,010.40
  6. Step 6: Final answer
    x = 1,062,060.97

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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.