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Finding the Fourth Proportional to 478,512.17, 660,361.75 and 274,600.39

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Solution

The fourth proportional to 478,512.17, 660,361.75 and 274,600.39 is: 378,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,512.17 : 660,361.75 = 274,600.39 : x
  2. Step 2: Convert to fraction form
    478,512.17/660,361.75 = 274,600.39/x
  3. Step 3: Cross multiply
    478,512.17x = 660,361.75 × 274,600.39
  4. Step 4: Simplify right side
    478,512.17x = 181,335,594,091.08
  5. Step 5: Solve for x
    x = 181,335,594,091.08/478,512.17
  6. Step 6: Final answer
    x = 378,957.12

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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.