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Finding the Fourth Proportional to 650,555.40, 978,165.90 and 547,912.20

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Solution

The fourth proportional to 650,555.40, 978,165.90 and 547,912.20 is: 823,833.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,555.40 : 978,165.90 = 547,912.20 : x
  2. Step 2: Convert to fraction form
    650,555.40/978,165.90 = 547,912.20/x
  3. Step 3: Cross multiply
    650,555.40x = 978,165.90 × 547,912.20
  4. Step 4: Simplify right side
    650,555.40x = 535,949,030,233.98
  5. Step 5: Solve for x
    x = 535,949,030,233.98/650,555.40
  6. Step 6: Final answer
    x = 823,833.04

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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.