Home / 853,150.28-1,177,355.45-485,609.47

Finding the Fourth Proportional to 853,150.28, 1,177,355.45 and 485,609.47

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Solution

The fourth proportional to 853,150.28, 1,177,355.45 and 485,609.47 is: 670,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,150.28 : 1,177,355.45 = 485,609.47 : x
  2. Step 2: Convert to fraction form
    853,150.28/1,177,355.45 = 485,609.47/x
  3. Step 3: Cross multiply
    853,150.28x = 1,177,355.45 × 485,609.47
  4. Step 4: Simplify right side
    853,150.28x = 571,734,954,346.75
  5. Step 5: Solve for x
    x = 571,734,954,346.75/853,150.28
  6. Step 6: Final answer
    x = 670,145.66

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1.5x scale

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.