Home / 853,685.96-1,280,668.02-398,732.24

Finding the Fourth Proportional to 853,685.96, 1,280,668.02 and 398,732.24

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Solution

The fourth proportional to 853,685.96, 1,280,668.02 and 398,732.24 is: 598,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,685.96 : 1,280,668.02 = 398,732.24 : x
  2. Step 2: Convert to fraction form
    853,685.96/1,280,668.02 = 398,732.24/x
  3. Step 3: Cross multiply
    853,685.96x = 1,280,668.02 × 398,732.24
  4. Step 4: Simplify right side
    853,685.96x = 510,643,628,310.97
  5. Step 5: Solve for x
    x = 510,643,628,310.97/853,685.96
  6. Step 6: Final answer
    x = 598,163.32

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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.