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Finding the Fourth Proportional to 986,642.10, 1,479,796.23 and 276,506.70

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Solution

The fourth proportional to 986,642.10, 1,479,796.23 and 276,506.70 is: 414,713.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,642.10 : 1,479,796.23 = 276,506.70 : x
  2. Step 2: Convert to fraction form
    986,642.10/1,479,796.23 = 276,506.70/x
  3. Step 3: Cross multiply
    986,642.10x = 1,479,796.23 × 276,506.70
  4. Step 4: Simplify right side
    986,642.10x = 409,173,572,229.74
  5. Step 5: Solve for x
    x = 409,173,572,229.74/986,642.10
  6. Step 6: Final answer
    x = 414,713.27

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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.