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Finding the Fourth Proportional to 655,081.76, 904,002.36 and 368,601.68

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Solution

The fourth proportional to 655,081.76, 904,002.36 and 368,601.68 is: 508,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,081.76 : 904,002.36 = 368,601.68 : x
  2. Step 2: Convert to fraction form
    655,081.76/904,002.36 = 368,601.68/x
  3. Step 3: Cross multiply
    655,081.76x = 904,002.36 × 368,601.68
  4. Step 4: Simplify right side
    655,081.76x = 333,216,788,619.97
  5. Step 5: Solve for x
    x = 333,216,788,619.97/655,081.76
  6. Step 6: Final answer
    x = 508,664.43

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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.