Home / 638,081.18-880,570.56-351,619.76

Finding the Fourth Proportional to 638,081.18, 880,570.56 and 351,619.76

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Solution

The fourth proportional to 638,081.18, 880,570.56 and 351,619.76 is: 485,245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,081.18 : 880,570.56 = 351,619.76 : x
  2. Step 2: Convert to fraction form
    638,081.18/880,570.56 = 351,619.76/x
  3. Step 3: Cross multiply
    638,081.18x = 880,570.56 × 351,619.76
  4. Step 4: Simplify right side
    638,081.18x = 309,626,008,970.27
  5. Step 5: Solve for x
    x = 309,626,008,970.27/638,081.18
  6. Step 6: Final answer
    x = 485,245.48

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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.