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Finding the Fourth Proportional to 478,980.73, 661,037.75 and 275,058.37

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Solution

The fourth proportional to 478,980.73, 661,037.75 and 275,058.37 is: 379,606.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,980.73 : 661,037.75 = 275,058.37 : x
  2. Step 2: Convert to fraction form
    478,980.73/661,037.75 = 275,058.37/x
  3. Step 3: Cross multiply
    478,980.73x = 661,037.75 × 275,058.37
  4. Step 4: Simplify right side
    478,980.73x = 181,823,964,027.05
  5. Step 5: Solve for x
    x = 181,823,964,027.05/478,980.73
  6. Step 6: Final answer
    x = 379,606.01

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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.