Home / 2,579,638.80-3,869,458.20-686,571.60

Finding the Fourth Proportional to 2,579,638.80, 3,869,458.20 and 686,571.60

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Solution

The fourth proportional to 2,579,638.80, 3,869,458.20 and 686,571.60 is: 1,029,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579,638.80 : 3,869,458.20 = 686,571.60 : x
  2. Step 2: Convert to fraction form
    2,579,638.80/3,869,458.20 = 686,571.60/x
  3. Step 3: Cross multiply
    2,579,638.80x = 3,869,458.20 × 686,571.60
  4. Step 4: Simplify right side
    2,579,638.80x = 2,656,660,107,507.12
  5. Step 5: Solve for x
    x = 2,656,660,107,507.12/2,579,638.80
  6. Step 6: Final answer
    x = 1,029,857.40

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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.