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Finding the Fourth Proportional to 479,914.48, 662,410.08 and 275,987.68

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Solution

The fourth proportional to 479,914.48, 662,410.08 and 275,987.68 is: 380,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,914.48 : 662,410.08 = 275,987.68 : x
  2. Step 2: Convert to fraction form
    479,914.48/662,410.08 = 275,987.68/x
  3. Step 3: Cross multiply
    479,914.48x = 662,410.08 × 275,987.68
  4. Step 4: Simplify right side
    479,914.48x = 182,817,021,187.81
  5. Step 5: Solve for x
    x = 182,817,021,187.81/479,914.48
  6. Step 6: Final answer
    x = 380,936.66

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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.