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Finding the Fourth Proportional to 627,199.96, 865,536.69 and 340,720

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Solution

The fourth proportional to 627,199.96, 865,536.69 and 340,720 is: 470,194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,199.96 : 865,536.69 = 340,720 : x
  2. Step 2: Convert to fraction form
    627,199.96/865,536.69 = 340,720/x
  3. Step 3: Cross multiply
    627,199.96x = 865,536.69 × 340,720
  4. Step 4: Simplify right side
    627,199.96x = 294,905,661,016.80
  5. Step 5: Solve for x
    x = 294,905,661,016.80/627,199.96
  6. Step 6: Final answer
    x = 470,194.00

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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.