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Finding the Fourth Proportional to 655,219.95, 904,053.92 and 368,635.47

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Solution

The fourth proportional to 655,219.95, 904,053.92 and 368,635.47 is: 508,632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,219.95 : 904,053.92 = 368,635.47 : x
  2. Step 2: Convert to fraction form
    655,219.95/904,053.92 = 368,635.47/x
  3. Step 3: Cross multiply
    655,219.95x = 904,053.92 × 368,635.47
  4. Step 4: Simplify right side
    655,219.95x = 333,266,341,704.54
  5. Step 5: Solve for x
    x = 333,266,341,704.54/655,219.95
  6. Step 6: Final answer
    x = 508,632.78

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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.