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Finding the Fourth Proportional to 605,874.40, 908,811.60 and 206,479.60

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Solution

The fourth proportional to 605,874.40, 908,811.60 and 206,479.60 is: 309,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,874.40 : 908,811.60 = 206,479.60 : x
  2. Step 2: Convert to fraction form
    605,874.40/908,811.60 = 206,479.60/x
  3. Step 3: Cross multiply
    605,874.40x = 908,811.60 × 206,479.60
  4. Step 4: Simplify right side
    605,874.40x = 187,651,055,643.36
  5. Step 5: Solve for x
    x = 187,651,055,643.36/605,874.40
  6. Step 6: Final answer
    x = 309,719.40

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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.