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Finding the Fourth Proportional to 408,083.60, 612,125.40 and 370,685.90

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Solution

The fourth proportional to 408,083.60, 612,125.40 and 370,685.90 is: 556,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,083.60 : 612,125.40 = 370,685.90 : x
  2. Step 2: Convert to fraction form
    408,083.60/612,125.40 = 370,685.90/x
  3. Step 3: Cross multiply
    408,083.60x = 612,125.40 × 370,685.90
  4. Step 4: Simplify right side
    408,083.60x = 226,906,254,811.86
  5. Step 5: Solve for x
    x = 226,906,254,811.86/408,083.60
  6. Step 6: Final answer
    x = 556,028.85

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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.