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Finding the Fourth Proportional to 407,890.70, 611,780.69 and 119,694.67

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Solution

The fourth proportional to 407,890.70, 611,780.69 and 119,694.67 is: 179,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,890.70 : 611,780.69 = 119,694.67 : x
  2. Step 2: Convert to fraction form
    407,890.70/611,780.69 = 119,694.67/x
  3. Step 3: Cross multiply
    407,890.70x = 611,780.69 × 119,694.67
  4. Step 4: Simplify right side
    407,890.70x = 73,226,889,331.37
  5. Step 5: Solve for x
    x = 73,226,889,331.37/407,890.70
  6. Step 6: Final answer
    x = 179,525.76

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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.