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Finding the Fourth Proportional to 638,851.69, 957,330.80 and 259,310.60

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Solution

The fourth proportional to 638,851.69, 957,330.80 and 259,310.60 is: 388,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,851.69 : 957,330.80 = 259,310.60 : x
  2. Step 2: Convert to fraction form
    638,851.69/957,330.80 = 259,310.60/x
  3. Step 3: Cross multiply
    638,851.69x = 957,330.80 × 259,310.60
  4. Step 4: Simplify right side
    638,851.69x = 248,246,022,625.68
  5. Step 5: Solve for x
    x = 248,246,022,625.68/638,851.69
  6. Step 6: Final answer
    x = 388,581.62

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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.