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Finding the Fourth Proportional to 1,295,921.10, 1,788,371.88 and 722,961.27

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Solution

The fourth proportional to 1,295,921.10, 1,788,371.88 and 722,961.27 is: 997,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,921.10 : 1,788,371.88 = 722,961.27 : x
  2. Step 2: Convert to fraction form
    1,295,921.10/1,788,371.88 = 722,961.27/x
  3. Step 3: Cross multiply
    1,295,921.10x = 1,788,371.88 × 722,961.27
  4. Step 4: Simplify right side
    1,295,921.10x = 1,292,923,605,597.09
  5. Step 5: Solve for x
    x = 1,292,923,605,597.09/1,295,921.10
  6. Step 6: Final answer
    x = 997,686.98

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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.