Home / 638,369.14-880,955.34-351,899.50

Finding the Fourth Proportional to 638,369.14, 880,955.34 and 351,899.50

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Solution

The fourth proportional to 638,369.14, 880,955.34 and 351,899.50 is: 485,624.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,369.14 : 880,955.34 = 351,899.50 : x
  2. Step 2: Convert to fraction form
    638,369.14/880,955.34 = 351,899.50/x
  3. Step 3: Cross multiply
    638,369.14x = 880,955.34 × 351,899.50
  4. Step 4: Simplify right side
    638,369.14x = 310,007,743,668.33
  5. Step 5: Solve for x
    x = 310,007,743,668.33/638,369.14
  6. Step 6: Final answer
    x = 485,624.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.