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Finding the Fourth Proportional to 627,081.54, 865,375 and 340,606.40

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Solution

The fourth proportional to 627,081.54, 865,375 and 340,606.40 is: 470,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,081.54 : 865,375 = 340,606.40 : x
  2. Step 2: Convert to fraction form
    627,081.54/865,375 = 340,606.40/x
  3. Step 3: Cross multiply
    627,081.54x = 865,375 × 340,606.40
  4. Step 4: Simplify right side
    627,081.54x = 294,752,263,400
  5. Step 5: Solve for x
    x = 294,752,263,400/627,081.54
  6. Step 6: Final answer
    x = 470,038.18

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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.