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Finding the Fourth Proportional to 605,959.20, 908,720.10 and 306,340.20

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Solution

The fourth proportional to 605,959.20, 908,720.10 and 306,340.20 is: 459,399.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,959.20 : 908,720.10 = 306,340.20 : x
  2. Step 2: Convert to fraction form
    605,959.20/908,720.10 = 306,340.20/x
  3. Step 3: Cross multiply
    605,959.20x = 908,720.10 × 306,340.20
  4. Step 4: Simplify right side
    605,959.20x = 278,377,497,178.02
  5. Step 5: Solve for x
    x = 278,377,497,178.02/605,959.20
  6. Step 6: Final answer
    x = 459,399.74

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1.5x scale

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.