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Finding the Fourth Proportional to 479,769.68, 718,738.68 and 268,769.36

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Solution

The fourth proportional to 479,769.68, 718,738.68 and 268,769.36 is: 402,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,769.68 : 718,738.68 = 268,769.36 : x
  2. Step 2: Convert to fraction form
    479,769.68/718,738.68 = 268,769.36/x
  3. Step 3: Cross multiply
    479,769.68x = 718,738.68 × 268,769.36
  4. Step 4: Simplify right side
    479,769.68x = 193,174,935,030.85
  5. Step 5: Solve for x
    x = 193,174,935,030.85/479,769.68
  6. Step 6: Final answer
    x = 402,640.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.