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Finding the Fourth Proportional to 627,173.28, 865,505.16 and 340,698.96

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Solution

The fourth proportional to 627,173.28, 865,505.16 and 340,698.96 is: 470,167.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,173.28 : 865,505.16 = 340,698.96 : x
  2. Step 2: Convert to fraction form
    627,173.28/865,505.16 = 340,698.96/x
  3. Step 3: Cross multiply
    627,173.28x = 865,505.16 × 340,698.96
  4. Step 4: Simplify right side
    627,173.28x = 294,876,707,886.63
  5. Step 5: Solve for x
    x = 294,876,707,886.63/627,173.28
  6. Step 6: Final answer
    x = 470,167.84

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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.