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Finding the Fourth Proportional to 627,318.30, 865,704.63 and 340,838.94

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Solution

The fourth proportional to 627,318.30, 865,704.63 and 340,838.94 is: 470,360.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,318.30 : 865,704.63 = 340,838.94 : x
  2. Step 2: Convert to fraction form
    627,318.30/865,704.63 = 340,838.94/x
  3. Step 3: Cross multiply
    627,318.30x = 865,704.63 × 340,838.94
  4. Step 4: Simplify right side
    627,318.30x = 295,065,848,442.29
  5. Step 5: Solve for x
    x = 295,065,848,442.29/627,318.30
  6. Step 6: Final answer
    x = 470,360.66

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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.