Home / 638,140.20-957,210.30-283,190.10

Finding the Fourth Proportional to 638,140.20, 957,210.30 and 283,190.10

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Solution

The fourth proportional to 638,140.20, 957,210.30 and 283,190.10 is: 424,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,140.20 : 957,210.30 = 283,190.10 : x
  2. Step 2: Convert to fraction form
    638,140.20/957,210.30 = 283,190.10/x
  3. Step 3: Cross multiply
    638,140.20x = 957,210.30 × 283,190.10
  4. Step 4: Simplify right side
    638,140.20x = 271,072,480,578.03
  5. Step 5: Solve for x
    x = 271,072,480,578.03/638,140.20
  6. Step 6: Final answer
    x = 424,785.15

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Half scale
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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.