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Finding the Fourth Proportional to 641,659.60, 962,489.40 and 585,672.40

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Solution

The fourth proportional to 641,659.60, 962,489.40 and 585,672.40 is: 878,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,659.60 : 962,489.40 = 585,672.40 : x
  2. Step 2: Convert to fraction form
    641,659.60/962,489.40 = 585,672.40/x
  3. Step 3: Cross multiply
    641,659.60x = 962,489.40 × 585,672.40
  4. Step 4: Simplify right side
    641,659.60x = 563,703,476,872.56
  5. Step 5: Solve for x
    x = 563,703,476,872.56/641,659.60
  6. Step 6: Final answer
    x = 878,508.60

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Double scale
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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.