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Finding the Fourth Proportional to 627,343.98, 865,737.90 and 340,864.80

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Solution

The fourth proportional to 627,343.98, 865,737.90 and 340,864.80 is: 470,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,343.98 : 865,737.90 = 340,864.80 : x
  2. Step 2: Convert to fraction form
    627,343.98/865,737.90 = 340,864.80/x
  3. Step 3: Cross multiply
    627,343.98x = 865,737.90 × 340,864.80
  4. Step 4: Simplify right side
    627,343.98x = 295,099,576,135.92
  5. Step 5: Solve for x
    x = 295,099,576,135.92/627,343.98
  6. Step 6: Final answer
    x = 470,395.17

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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.