Home / 649,099.49-972,778.90-505,179.09

Finding the Fourth Proportional to 649,099.49, 972,778.90 and 505,179.09

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Solution

The fourth proportional to 649,099.49, 972,778.90 and 505,179.09 is: 757,091.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,099.49 : 972,778.90 = 505,179.09 : x
  2. Step 2: Convert to fraction form
    649,099.49/972,778.90 = 505,179.09/x
  3. Step 3: Cross multiply
    649,099.49x = 972,778.90 × 505,179.09
  4. Step 4: Simplify right side
    649,099.49x = 491,427,554,609.31
  5. Step 5: Solve for x
    x = 491,427,554,609.31/649,099.49
  6. Step 6: Final answer
    x = 757,091.27

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1.5x scale

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.