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Finding the Fourth Proportional to 871,801.20, 1,307,896.20 and 682,844.40

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Solution

The fourth proportional to 871,801.20, 1,307,896.20 and 682,844.40 is: 1,024,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,801.20 : 1,307,896.20 = 682,844.40 : x
  2. Step 2: Convert to fraction form
    871,801.20/1,307,896.20 = 682,844.40/x
  3. Step 3: Cross multiply
    871,801.20x = 1,307,896.20 × 682,844.40
  4. Step 4: Simplify right side
    871,801.20x = 893,089,595,951.28
  5. Step 5: Solve for x
    x = 893,089,595,951.28/871,801.20
  6. Step 6: Final answer
    x = 1,024,418.87

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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.