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Finding the Fourth Proportional to 2,652,562.80, 3,978,844.20 and 879,404.40

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Solution

The fourth proportional to 2,652,562.80, 3,978,844.20 and 879,404.40 is: 1,319,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652,562.80 : 3,978,844.20 = 879,404.40 : x
  2. Step 2: Convert to fraction form
    2,652,562.80/3,978,844.20 = 879,404.40/x
  3. Step 3: Cross multiply
    2,652,562.80x = 3,978,844.20 × 879,404.40
  4. Step 4: Simplify right side
    2,652,562.80x = 3,499,013,096,394.48
  5. Step 5: Solve for x
    x = 3,499,013,096,394.48/2,652,562.80
  6. Step 6: Final answer
    x = 1,319,106.60

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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.