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Finding the Fourth Proportional to 871,608.95, 1,202,820.45 and 484,424.30

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Solution

The fourth proportional to 871,608.95, 1,202,820.45 and 484,424.30 is: 668,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,608.95 : 1,202,820.45 = 484,424.30 : x
  2. Step 2: Convert to fraction form
    871,608.95/1,202,820.45 = 484,424.30/x
  3. Step 3: Cross multiply
    871,608.95x = 1,202,820.45 × 484,424.30
  4. Step 4: Simplify right side
    871,608.95x = 582,675,454,516.94
  5. Step 5: Solve for x
    x = 582,675,454,516.94/871,608.95
  6. Step 6: Final answer
    x = 668,505.59

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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.