Home / 1,286,741.48-1,929,453.12-679,855.59

Finding the Fourth Proportional to 1,286,741.48, 1,929,453.12 and 679,855.59

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Solution

The fourth proportional to 1,286,741.48, 1,929,453.12 and 679,855.59 is: 1,019,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,741.48 : 1,929,453.12 = 679,855.59 : x
  2. Step 2: Convert to fraction form
    1,286,741.48/1,929,453.12 = 679,855.59/x
  3. Step 3: Cross multiply
    1,286,741.48x = 1,929,453.12 × 679,855.59
  4. Step 4: Simplify right side
    1,286,741.48x = 1,311,749,489,274.94
  5. Step 5: Solve for x
    x = 1,311,749,489,274.94/1,286,741.48
  6. Step 6: Final answer
    x = 1,019,435.15

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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.