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Finding the Fourth Proportional to 628,778.52, 867,833.96 and 356,871.92

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Solution

The fourth proportional to 628,778.52, 867,833.96 and 356,871.92 is: 492,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,778.52 : 867,833.96 = 356,871.92 : x
  2. Step 2: Convert to fraction form
    628,778.52/867,833.96 = 356,871.92/x
  3. Step 3: Cross multiply
    628,778.52x = 867,833.96 × 356,871.92
  4. Step 4: Simplify right side
    628,778.52x = 309,705,571,546.40
  5. Step 5: Solve for x
    x = 309,705,571,546.40/628,778.52
  6. Step 6: Final answer
    x = 492,551.13

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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.