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Finding the Fourth Proportional to 605,074.20, 907,611.30 and 290,146.20

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Solution

The fourth proportional to 605,074.20, 907,611.30 and 290,146.20 is: 435,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,074.20 : 907,611.30 = 290,146.20 : x
  2. Step 2: Convert to fraction form
    605,074.20/907,611.30 = 290,146.20/x
  3. Step 3: Cross multiply
    605,074.20x = 907,611.30 × 290,146.20
  4. Step 4: Simplify right side
    605,074.20x = 263,339,969,772.06
  5. Step 5: Solve for x
    x = 263,339,969,772.06/605,074.20
  6. Step 6: Final answer
    x = 435,219.30

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Similar ratio
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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.