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Finding the Fourth Proportional to 638,453.60, 957,680.40 and 629,122.40

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Solution

The fourth proportional to 638,453.60, 957,680.40 and 629,122.40 is: 943,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,453.60 : 957,680.40 = 629,122.40 : x
  2. Step 2: Convert to fraction form
    638,453.60/957,680.40 = 629,122.40/x
  3. Step 3: Cross multiply
    638,453.60x = 957,680.40 × 629,122.40
  4. Step 4: Simplify right side
    638,453.60x = 602,498,191,680.96
  5. Step 5: Solve for x
    x = 602,498,191,680.96/638,453.60
  6. Step 6: Final answer
    x = 943,683.60

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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.