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Finding the Fourth Proportional to 655,071.22, 903,996.66 and 368,591.68

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Solution

The fourth proportional to 655,071.22, 903,996.66 and 368,591.68 is: 508,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,071.22 : 903,996.66 = 368,591.68 : x
  2. Step 2: Convert to fraction form
    655,071.22/903,996.66 = 368,591.68/x
  3. Step 3: Cross multiply
    655,071.22x = 903,996.66 × 368,591.68
  4. Step 4: Simplify right side
    655,071.22x = 333,205,647,623.79
  5. Step 5: Solve for x
    x = 333,205,647,623.79/655,071.22
  6. Step 6: Final answer
    x = 508,655.60

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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.