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Finding the Fourth Proportional to 627,113.16, 865,432.26 and 340,649.64

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Solution

The fourth proportional to 627,113.16, 865,432.26 and 340,649.64 is: 470,105.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,113.16 : 865,432.26 = 340,649.64 : x
  2. Step 2: Convert to fraction form
    627,113.16/865,432.26 = 340,649.64/x
  3. Step 3: Cross multiply
    627,113.16x = 865,432.26 × 340,649.64
  4. Step 4: Simplify right side
    627,113.16x = 294,809,187,813.39
  5. Step 5: Solve for x
    x = 294,809,187,813.39/627,113.16
  6. Step 6: Final answer
    x = 470,105.25

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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.