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Finding the Fourth Proportional to 1,295,692.80, 1,788,043.92 and 714,921.24

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Solution

The fourth proportional to 1,295,692.80, 1,788,043.92 and 714,921.24 is: 986,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,692.80 : 1,788,043.92 = 714,921.24 : x
  2. Step 2: Convert to fraction form
    1,295,692.80/1,788,043.92 = 714,921.24/x
  3. Step 3: Cross multiply
    1,295,692.80x = 1,788,043.92 × 714,921.24
  4. Step 4: Simplify right side
    1,295,692.80x = 1,278,310,576,460.86
  5. Step 5: Solve for x
    x = 1,278,310,576,460.86/1,295,692.80
  6. Step 6: Final answer
    x = 986,584.61

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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.