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Finding the Fourth Proportional to 655,213.69, 904,045.30 and 368,629.21

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Solution

The fourth proportional to 655,213.69, 904,045.30 and 368,629.21 is: 508,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,213.69 : 904,045.30 = 368,629.21 : x
  2. Step 2: Convert to fraction form
    655,213.69/904,045.30 = 368,629.21/x
  3. Step 3: Cross multiply
    655,213.69x = 904,045.30 × 368,629.21
  4. Step 4: Simplify right side
    655,213.69x = 333,257,504,951.70
  5. Step 5: Solve for x
    x = 333,257,504,951.70/655,213.69
  6. Step 6: Final answer
    x = 508,624.15

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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.