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Finding the Fourth Proportional to 486,361.26, 729,664.20 and 344,484.36

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Solution

The fourth proportional to 486,361.26, 729,664.20 and 344,484.36 is: 516,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,361.26 : 729,664.20 = 344,484.36 : x
  2. Step 2: Convert to fraction form
    486,361.26/729,664.20 = 344,484.36/x
  3. Step 3: Cross multiply
    486,361.26x = 729,664.20 × 344,484.36
  4. Step 4: Simplify right side
    486,361.26x = 251,357,904,951.91
  5. Step 5: Solve for x
    x = 251,357,904,951.91/486,361.26
  6. Step 6: Final answer
    x = 516,813.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.