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Finding the Fourth Proportional to 628,777, 867,710.82 and 342,299.08

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Solution

The fourth proportional to 628,777, 867,710.82 and 342,299.08 is: 472,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,777 : 867,710.82 = 342,299.08 : x
  2. Step 2: Convert to fraction form
    628,777/867,710.82 = 342,299.08/x
  3. Step 3: Cross multiply
    628,777x = 867,710.82 × 342,299.08
  4. Step 4: Simplify right side
    628,777x = 297,016,615,392.05
  5. Step 5: Solve for x
    x = 297,016,615,392.05/628,777
  6. Step 6: Final answer
    x = 472,371.95

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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.