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Finding the Fourth Proportional to 640,937.88, 884,227.01 and 368,940.69

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Solution

The fourth proportional to 640,937.88, 884,227.01 and 368,940.69 is: 508,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,937.88 : 884,227.01 = 368,940.69 : x
  2. Step 2: Convert to fraction form
    640,937.88/884,227.01 = 368,940.69/x
  3. Step 3: Cross multiply
    640,937.88x = 884,227.01 × 368,940.69
  4. Step 4: Simplify right side
    640,937.88x = 326,227,323,186.04
  5. Step 5: Solve for x
    x = 326,227,323,186.04/640,937.88
  6. Step 6: Final answer
    x = 508,984.31

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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.