Home / 872,243.20-1,308,429.60-311,204.80

Finding the Fourth Proportional to 872,243.20, 1,308,429.60 and 311,204.80

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Solution

The fourth proportional to 872,243.20, 1,308,429.60 and 311,204.80 is: 466,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,243.20 : 1,308,429.60 = 311,204.80 : x
  2. Step 2: Convert to fraction form
    872,243.20/1,308,429.60 = 311,204.80/x
  3. Step 3: Cross multiply
    872,243.20x = 1,308,429.60 × 311,204.80
  4. Step 4: Simplify right side
    872,243.20x = 407,189,571,982.08
  5. Step 5: Solve for x
    x = 407,189,571,982.08/872,243.20
  6. Step 6: Final answer
    x = 466,830.32

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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.