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Finding the Fourth Proportional to 627,329.61, 865,722.74 and 340,854.48

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Solution

The fourth proportional to 627,329.61, 865,722.74 and 340,854.48 is: 470,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,329.61 : 865,722.74 = 340,854.48 : x
  2. Step 2: Convert to fraction form
    627,329.61/865,722.74 = 340,854.48/x
  3. Step 3: Cross multiply
    627,329.61x = 865,722.74 × 340,854.48
  4. Step 4: Simplify right side
    627,329.61x = 295,085,472,662.60
  5. Step 5: Solve for x
    x = 295,085,472,662.60/627,329.61
  6. Step 6: Final answer
    x = 470,383.46

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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.