Home / 909,891.20-1,364,787.60-278,806.88

Finding the Fourth Proportional to 909,891.20, 1,364,787.60 and 278,806.88

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Solution

The fourth proportional to 909,891.20, 1,364,787.60 and 278,806.88 is: 418,195.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,891.20 : 1,364,787.60 = 278,806.88 : x
  2. Step 2: Convert to fraction form
    909,891.20/1,364,787.60 = 278,806.88/x
  3. Step 3: Cross multiply
    909,891.20x = 1,364,787.60 × 278,806.88
  4. Step 4: Simplify right side
    909,891.20x = 380,512,172,618.69
  5. Step 5: Solve for x
    x = 380,512,172,618.69/909,891.20
  6. Step 6: Final answer
    x = 418,195.24

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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.