Home / 1,138,412.69-1,707,619.02-428,599.97

Finding the Fourth Proportional to 1,138,412.69, 1,707,619.02 and 428,599.97

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Solution

The fourth proportional to 1,138,412.69, 1,707,619.02 and 428,599.97 is: 642,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,412.69 : 1,707,619.02 = 428,599.97 : x
  2. Step 2: Convert to fraction form
    1,138,412.69/1,707,619.02 = 428,599.97/x
  3. Step 3: Cross multiply
    1,138,412.69x = 1,707,619.02 × 428,599.97
  4. Step 4: Simplify right side
    1,138,412.69x = 731,885,452,205.33
  5. Step 5: Solve for x
    x = 731,885,452,205.33/1,138,412.69
  6. Step 6: Final answer
    x = 642,899.94

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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.