Home / 638,117.20-957,175.80-259,219.45

Finding the Fourth Proportional to 638,117.20, 957,175.80 and 259,219.45

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Solution

The fourth proportional to 638,117.20, 957,175.80 and 259,219.45 is: 388,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,117.20 : 957,175.80 = 259,219.45 : x
  2. Step 2: Convert to fraction form
    638,117.20/957,175.80 = 259,219.45/x
  3. Step 3: Cross multiply
    638,117.20x = 957,175.80 × 259,219.45
  4. Step 4: Simplify right side
    638,117.20x = 248,118,584,429.31
  5. Step 5: Solve for x
    x = 248,118,584,429.31/638,117.20
  6. Step 6: Final answer
    x = 388,829.18

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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.