Home / 872,299.20-1,307,673.36-339,697.20

Finding the Fourth Proportional to 872,299.20, 1,307,673.36 and 339,697.20

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Solution

The fourth proportional to 872,299.20, 1,307,673.36 and 339,697.20 is: 509,243.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,299.20 : 1,307,673.36 = 339,697.20 : x
  2. Step 2: Convert to fraction form
    872,299.20/1,307,673.36 = 339,697.20/x
  3. Step 3: Cross multiply
    872,299.20x = 1,307,673.36 × 339,697.20
  4. Step 4: Simplify right side
    872,299.20x = 444,212,978,906.59
  5. Step 5: Solve for x
    x = 444,212,978,906.59/872,299.20
  6. Step 6: Final answer
    x = 509,243.82

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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.