Home / 638,211.48-957,599.10-338,619.21

Finding the Fourth Proportional to 638,211.48, 957,599.10 and 338,619.21

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Solution

The fourth proportional to 638,211.48, 957,599.10 and 338,619.21 is: 508,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,211.48 : 957,599.10 = 338,619.21 : x
  2. Step 2: Convert to fraction form
    638,211.48/957,599.10 = 338,619.21/x
  3. Step 3: Cross multiply
    638,211.48x = 957,599.10 × 338,619.21
  4. Step 4: Simplify right side
    638,211.48x = 324,261,450,738.71
  5. Step 5: Solve for x
    x = 324,261,450,738.71/638,211.48
  6. Step 6: Final answer
    x = 508,078.37

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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.