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Finding the Fourth Proportional to 1,687,602.75, 2,328,947.47 and 923,656.11

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Solution

The fourth proportional to 1,687,602.75, 2,328,947.47 and 923,656.11 is: 1,274,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,602.75 : 2,328,947.47 = 923,656.11 : x
  2. Step 2: Convert to fraction form
    1,687,602.75/2,328,947.47 = 923,656.11/x
  3. Step 3: Cross multiply
    1,687,602.75x = 2,328,947.47 × 923,656.11
  4. Step 4: Simplify right side
    1,687,602.75x = 2,151,146,560,534.54
  5. Step 5: Solve for x
    x = 2,151,146,560,534.54/1,687,602.75
  6. Step 6: Final answer
    x = 1,274,675.90

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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.