Home / 638,132.80-957,199.20-622,386.40

Finding the Fourth Proportional to 638,132.80, 957,199.20 and 622,386.40

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Solution

The fourth proportional to 638,132.80, 957,199.20 and 622,386.40 is: 933,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,132.80 : 957,199.20 = 622,386.40 : x
  2. Step 2: Convert to fraction form
    638,132.80/957,199.20 = 622,386.40/x
  3. Step 3: Cross multiply
    638,132.80x = 957,199.20 × 622,386.40
  4. Step 4: Simplify right side
    638,132.80x = 595,747,764,170.88
  5. Step 5: Solve for x
    x = 595,747,764,170.88/638,132.80
  6. Step 6: Final answer
    x = 933,579.60

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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.