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Finding the Fourth Proportional to 628,336.12, 867,078.12 and 341,856.49

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Solution

The fourth proportional to 628,336.12, 867,078.12 and 341,856.49 is: 471,747.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,336.12 : 867,078.12 = 341,856.49 : x
  2. Step 2: Convert to fraction form
    628,336.12/867,078.12 = 341,856.49/x
  3. Step 3: Cross multiply
    628,336.12x = 867,078.12 × 341,856.49
  4. Step 4: Simplify right side
    628,336.12x = 296,416,282,659.00
  5. Step 5: Solve for x
    x = 296,416,282,659.00/628,336.12
  6. Step 6: Final answer
    x = 471,747.96

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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.