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Finding the Fourth Proportional to 945,361.78, 1,305,080.85 and 730,018.42

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Solution

The fourth proportional to 945,361.78, 1,305,080.85 and 730,018.42 is: 1,007,797.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,361.78 : 1,305,080.85 = 730,018.42 : x
  2. Step 2: Convert to fraction form
    945,361.78/1,305,080.85 = 730,018.42/x
  3. Step 3: Cross multiply
    945,361.78x = 1,305,080.85 × 730,018.42
  4. Step 4: Simplify right side
    945,361.78x = 952,733,060,089.26
  5. Step 5: Solve for x
    x = 952,733,060,089.26/945,361.78
  6. Step 6: Final answer
    x = 1,007,797.31

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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.