Home / 1,284,698.20-1,926,279.30-786,419.80

Finding the Fourth Proportional to 1,284,698.20, 1,926,279.30 and 786,419.80

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Solution

The fourth proportional to 1,284,698.20, 1,926,279.30 and 786,419.80 is: 1,179,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,698.20 : 1,926,279.30 = 786,419.80 : x
  2. Step 2: Convert to fraction form
    1,284,698.20/1,926,279.30 = 786,419.80/x
  3. Step 3: Cross multiply
    1,284,698.20x = 1,926,279.30 × 786,419.80
  4. Step 4: Simplify right side
    1,284,698.20x = 1,514,864,181,850.14
  5. Step 5: Solve for x
    x = 1,514,864,181,850.14/1,284,698.20
  6. Step 6: Final answer
    x = 1,179,159.57

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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.