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Finding the Fourth Proportional to 636,121.44, 954,298.80 and 261,940.32

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Solution

The fourth proportional to 636,121.44, 954,298.80 and 261,940.32 is: 392,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,121.44 : 954,298.80 = 261,940.32 : x
  2. Step 2: Convert to fraction form
    636,121.44/954,298.80 = 261,940.32/x
  3. Step 3: Cross multiply
    636,121.44x = 954,298.80 × 261,940.32
  4. Step 4: Simplify right side
    636,121.44x = 249,969,333,047.62
  5. Step 5: Solve for x
    x = 249,969,333,047.62/636,121.44
  6. Step 6: Final answer
    x = 392,958.51

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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.