Home / 435,939.69-653,921.92-120,396.60

Finding the Fourth Proportional to 435,939.69, 653,921.92 and 120,396.60

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Solution

The fourth proportional to 435,939.69, 653,921.92 and 120,396.60 is: 180,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,939.69 : 653,921.92 = 120,396.60 : x
  2. Step 2: Convert to fraction form
    435,939.69/653,921.92 = 120,396.60/x
  3. Step 3: Cross multiply
    435,939.69x = 653,921.92 × 120,396.60
  4. Step 4: Simplify right side
    435,939.69x = 78,729,975,532.48
  5. Step 5: Solve for x
    x = 78,729,975,532.48/435,939.69
  6. Step 6: Final answer
    x = 180,598.32

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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.