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Finding the Fourth Proportional to 986,472.60, 1,479,708.90 and 827,040.30

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Solution

The fourth proportional to 986,472.60, 1,479,708.90 and 827,040.30 is: 1,240,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,472.60 : 1,479,708.90 = 827,040.30 : x
  2. Step 2: Convert to fraction form
    986,472.60/1,479,708.90 = 827,040.30/x
  3. Step 3: Cross multiply
    986,472.60x = 1,479,708.90 × 827,040.30
  4. Step 4: Simplify right side
    986,472.60x = 1,223,778,892,568.67
  5. Step 5: Solve for x
    x = 1,223,778,892,568.67/986,472.60
  6. Step 6: Final answer
    x = 1,240,560.45

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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.