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Finding the Fourth Proportional to 627,190.29, 865,489.86 and 340,709.49

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Solution

The fourth proportional to 627,190.29, 865,489.86 and 340,709.49 is: 470,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,190.29 : 865,489.86 = 340,709.49 : x
  2. Step 2: Convert to fraction form
    627,190.29/865,489.86 = 340,709.49/x
  3. Step 3: Cross multiply
    627,190.29x = 865,489.86 × 340,709.49
  4. Step 4: Simplify right side
    627,190.29x = 294,880,608,800.77
  5. Step 5: Solve for x
    x = 294,880,608,800.77/627,190.29
  6. Step 6: Final answer
    x = 470,161.31

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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.