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Finding the Fourth Proportional to 628,824.63, 867,754.71 and 342,338.97

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Solution

The fourth proportional to 628,824.63, 867,754.71 and 342,338.97 is: 472,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,824.63 : 867,754.71 = 342,338.97 : x
  2. Step 2: Convert to fraction form
    628,824.63/867,754.71 = 342,338.97/x
  3. Step 3: Cross multiply
    628,824.63x = 867,754.71 × 342,338.97
  4. Step 4: Simplify right side
    628,824.63x = 297,066,253,634.05
  5. Step 5: Solve for x
    x = 297,066,253,634.05/628,824.63
  6. Step 6: Final answer
    x = 472,415.11

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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.