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Finding the Fourth Proportional to 628,863.94, 867,830.92 and 342,381.52

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Solution

The fourth proportional to 628,863.94, 867,830.92 and 342,381.52 is: 472,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,863.94 : 867,830.92 = 342,381.52 : x
  2. Step 2: Convert to fraction form
    628,863.94/867,830.92 = 342,381.52/x
  3. Step 3: Cross multiply
    628,863.94x = 867,830.92 × 342,381.52
  4. Step 4: Simplify right side
    628,863.94x = 297,129,269,492.60
  5. Step 5: Solve for x
    x = 297,129,269,492.60/628,863.94
  6. Step 6: Final answer
    x = 472,485.78

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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.