Home / 638,419.60-957,629.40-195,187.60

Finding the Fourth Proportional to 638,419.60, 957,629.40 and 195,187.60

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Solution

The fourth proportional to 638,419.60, 957,629.40 and 195,187.60 is: 292,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,419.60 : 957,629.40 = 195,187.60 : x
  2. Step 2: Convert to fraction form
    638,419.60/957,629.40 = 195,187.60/x
  3. Step 3: Cross multiply
    638,419.60x = 957,629.40 × 195,187.60
  4. Step 4: Simplify right side
    638,419.60x = 186,917,384,275.44
  5. Step 5: Solve for x
    x = 186,917,384,275.44/638,419.60
  6. Step 6: Final answer
    x = 292,781.40

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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.