Home / 775,153.72-1,162,731.12-214,188.76

Finding the Fourth Proportional to 775,153.72, 1,162,731.12 and 214,188.76

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Solution

The fourth proportional to 775,153.72, 1,162,731.12 and 214,188.76 is: 321,283.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,153.72 : 1,162,731.12 = 214,188.76 : x
  2. Step 2: Convert to fraction form
    775,153.72/1,162,731.12 = 214,188.76/x
  3. Step 3: Cross multiply
    775,153.72x = 1,162,731.12 × 214,188.76
  4. Step 4: Simplify right side
    775,153.72x = 249,043,936,806.21
  5. Step 5: Solve for x
    x = 249,043,936,806.21/775,153.72
  6. Step 6: Final answer
    x = 321,283.29

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Double scale
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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.