Home / 853,121.43-1,177,315.63-485,580.62

Finding the Fourth Proportional to 853,121.43, 1,177,315.63 and 485,580.62

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Solution

The fourth proportional to 853,121.43, 1,177,315.63 and 485,580.62 is: 670,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,121.43 : 1,177,315.63 = 485,580.62 : x
  2. Step 2: Convert to fraction form
    853,121.43/1,177,315.63 = 485,580.62/x
  3. Step 3: Cross multiply
    853,121.43x = 1,177,315.63 × 485,580.62
  4. Step 4: Simplify right side
    853,121.43x = 571,681,655,280.43
  5. Step 5: Solve for x
    x = 571,681,655,280.43/853,121.43
  6. Step 6: Final answer
    x = 670,105.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.