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Finding the Fourth Proportional to 605,706.20, 908,340.60 and 306,087.20

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Solution

The fourth proportional to 605,706.20, 908,340.60 and 306,087.20 is: 459,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,706.20 : 908,340.60 = 306,087.20 : x
  2. Step 2: Convert to fraction form
    605,706.20/908,340.60 = 306,087.20/x
  3. Step 3: Cross multiply
    605,706.20x = 908,340.60 × 306,087.20
  4. Step 4: Simplify right side
    605,706.20x = 278,031,430,900.32
  5. Step 5: Solve for x
    x = 278,031,430,900.32/605,706.20
  6. Step 6: Final answer
    x = 459,020.28

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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.