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Finding the Fourth Proportional to 627,005.61, 865,275.62 and 340,530.48

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Solution

The fourth proportional to 627,005.61, 865,275.62 and 340,530.48 is: 469,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,005.61 : 865,275.62 = 340,530.48 : x
  2. Step 2: Convert to fraction form
    627,005.61/865,275.62 = 340,530.48/x
  3. Step 3: Cross multiply
    627,005.61x = 865,275.62 × 340,530.48
  4. Step 4: Simplify right side
    627,005.61x = 294,652,720,508.25
  5. Step 5: Solve for x
    x = 294,652,720,508.25/627,005.61
  6. Step 6: Final answer
    x = 469,936.34

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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.