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Finding the Fourth Proportional to 986,546.10, 1,479,709.80 and 276,645.90

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Solution

The fourth proportional to 986,546.10, 1,479,709.80 and 276,645.90 is: 414,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,546.10 : 1,479,709.80 = 276,645.90 : x
  2. Step 2: Convert to fraction form
    986,546.10/1,479,709.80 = 276,645.90/x
  3. Step 3: Cross multiply
    986,546.10x = 1,479,709.80 × 276,645.90
  4. Step 4: Simplify right side
    986,546.10x = 409,355,649,359.82
  5. Step 5: Solve for x
    x = 409,355,649,359.82/986,546.10
  6. Step 6: Final answer
    x = 414,938.19

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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.