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Finding the Fourth Proportional to 627,235.56, 865,591.16 and 340,757.70

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Solution

The fourth proportional to 627,235.56, 865,591.16 and 340,757.70 is: 470,248.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,235.56 : 865,591.16 = 340,757.70 : x
  2. Step 2: Convert to fraction form
    627,235.56/865,591.16 = 340,757.70/x
  3. Step 3: Cross multiply
    627,235.56x = 865,591.16 × 340,757.70
  4. Step 4: Simplify right side
    627,235.56x = 294,956,851,118.14
  5. Step 5: Solve for x
    x = 294,956,851,118.14/627,235.56
  6. Step 6: Final answer
    x = 470,248.93

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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.