Home / 1,087,737.80-1,629,857.10-687,662.60

Finding the Fourth Proportional to 1,087,737.80, 1,629,857.10 and 687,662.60

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Solution

The fourth proportional to 1,087,737.80, 1,629,857.10 and 687,662.60 is: 1,030,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,737.80 : 1,629,857.10 = 687,662.60 : x
  2. Step 2: Convert to fraction form
    1,087,737.80/1,629,857.10 = 687,662.60/x
  3. Step 3: Cross multiply
    1,087,737.80x = 1,629,857.10 × 687,662.60
  4. Step 4: Simplify right side
    1,087,737.80x = 1,120,791,771,014.46
  5. Step 5: Solve for x
    x = 1,120,791,771,014.46/1,087,737.80
  6. Step 6: Final answer
    x = 1,030,387.81

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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.