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Finding the Fourth Proportional to 628,863.85, 867,803.52 and 342,383.32

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Solution

The fourth proportional to 628,863.85, 867,803.52 and 342,383.32 is: 472,473.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,863.85 : 867,803.52 = 342,383.32 : x
  2. Step 2: Convert to fraction form
    628,863.85/867,803.52 = 342,383.32/x
  3. Step 3: Cross multiply
    628,863.85x = 867,803.52 × 342,383.32
  4. Step 4: Simplify right side
    628,863.85x = 297,121,450,285.29
  5. Step 5: Solve for x
    x = 297,121,450,285.29/628,863.85
  6. Step 6: Final answer
    x = 472,473.41

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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.