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Finding the Fourth Proportional to 978,563.79, 1,350,422.84 and 548,866.89

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Solution

The fourth proportional to 978,563.79, 1,350,422.84 and 548,866.89 is: 757,439.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,563.79 : 1,350,422.84 = 548,866.89 : x
  2. Step 2: Convert to fraction form
    978,563.79/1,350,422.84 = 548,866.89/x
  3. Step 3: Cross multiply
    978,563.79x = 1,350,422.84 × 548,866.89
  4. Step 4: Simplify right side
    978,563.79x = 741,202,381,631.43
  5. Step 5: Solve for x
    x = 741,202,381,631.43/978,563.79
  6. Step 6: Final answer
    x = 757,439.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.