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Finding the Fourth Proportional to 479,001.72, 660,994.38 and 275,005.56

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Solution

The fourth proportional to 479,001.72, 660,994.38 and 275,005.56 is: 379,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,001.72 : 660,994.38 = 275,005.56 : x
  2. Step 2: Convert to fraction form
    479,001.72/660,994.38 = 275,005.56/x
  3. Step 3: Cross multiply
    479,001.72x = 660,994.38 × 275,005.56
  4. Step 4: Simplify right side
    479,001.72x = 181,777,129,628.75
  5. Step 5: Solve for x
    x = 181,777,129,628.75/479,001.72
  6. Step 6: Final answer
    x = 379,491.60

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1.5x scale

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.