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Finding the Fourth Proportional to 613,310.60, 919,965.90 and 585,754.40

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Solution

The fourth proportional to 613,310.60, 919,965.90 and 585,754.40 is: 878,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,310.60 : 919,965.90 = 585,754.40 : x
  2. Step 2: Convert to fraction form
    613,310.60/919,965.90 = 585,754.40/x
  3. Step 3: Cross multiply
    613,310.60x = 919,965.90 × 585,754.40
  4. Step 4: Simplify right side
    613,310.60x = 538,874,073,774.96
  5. Step 5: Solve for x
    x = 538,874,073,774.96/613,310.60
  6. Step 6: Final answer
    x = 878,631.60

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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.