Home / 909,403.20-1,364,299.20-278,380.80

Finding the Fourth Proportional to 909,403.20, 1,364,299.20 and 278,380.80

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Solution

The fourth proportional to 909,403.20, 1,364,299.20 and 278,380.80 is: 417,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,403.20 : 1,364,299.20 = 278,380.80 : x
  2. Step 2: Convert to fraction form
    909,403.20/1,364,299.20 = 278,380.80/x
  3. Step 3: Cross multiply
    909,403.20x = 1,364,299.20 × 278,380.80
  4. Step 4: Simplify right side
    909,403.20x = 379,794,702,735.36
  5. Step 5: Solve for x
    x = 379,794,702,735.36/909,403.20
  6. Step 6: Final answer
    x = 417,630.71

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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.