Home / 455,819.40-683,729.10-219,623.40

Finding the Fourth Proportional to 455,819.40, 683,729.10 and 219,623.40

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Solution

The fourth proportional to 455,819.40, 683,729.10 and 219,623.40 is: 329,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,819.40 : 683,729.10 = 219,623.40 : x
  2. Step 2: Convert to fraction form
    455,819.40/683,729.10 = 219,623.40/x
  3. Step 3: Cross multiply
    455,819.40x = 683,729.10 × 219,623.40
  4. Step 4: Simplify right side
    455,819.40x = 150,162,909,620.94
  5. Step 5: Solve for x
    x = 150,162,909,620.94/455,819.40
  6. Step 6: Final answer
    x = 329,435.10

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Similar ratio
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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.