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Finding the Fourth Proportional to 627,129.68, 865,440.60 and 340,647.44

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Solution

The fourth proportional to 627,129.68, 865,440.60 and 340,647.44 is: 470,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,129.68 : 865,440.60 = 340,647.44 : x
  2. Step 2: Convert to fraction form
    627,129.68/865,440.60 = 340,647.44/x
  3. Step 3: Cross multiply
    627,129.68x = 865,440.60 × 340,647.44
  4. Step 4: Simplify right side
    627,129.68x = 294,810,124,862.06
  5. Step 5: Solve for x
    x = 294,810,124,862.06/627,129.68
  6. Step 6: Final answer
    x = 470,094.36

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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.