Home / 660,579.12-990,868.67-187,268.58

Finding the Fourth Proportional to 660,579.12, 990,868.67 and 187,268.58

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Solution

The fourth proportional to 660,579.12, 990,868.67 and 187,268.58 is: 280,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,579.12 : 990,868.67 = 187,268.58 : x
  2. Step 2: Convert to fraction form
    660,579.12/990,868.67 = 187,268.58/x
  3. Step 3: Cross multiply
    660,579.12x = 990,868.67 × 187,268.58
  4. Step 4: Simplify right side
    660,579.12x = 185,558,567,861.05
  5. Step 5: Solve for x
    x = 185,558,567,861.05/660,579.12
  6. Step 6: Final answer
    x = 280,902.87

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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.