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Finding the Fourth Proportional to 640,755.11, 884,214.03 and 350,361.20

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Solution

The fourth proportional to 640,755.11, 884,214.03 and 350,361.20 is: 483,483.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,755.11 : 884,214.03 = 350,361.20 : x
  2. Step 2: Convert to fraction form
    640,755.11/884,214.03 = 350,361.20/x
  3. Step 3: Cross multiply
    640,755.11x = 884,214.03 × 350,361.20
  4. Step 4: Simplify right side
    640,755.11x = 309,794,288,607.64
  5. Step 5: Solve for x
    x = 309,794,288,607.64/640,755.11
  6. Step 6: Final answer
    x = 483,483.13

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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.