Home / 460,828.20-691,242.30-128,404.20

Finding the Fourth Proportional to 460,828.20, 691,242.30 and 128,404.20

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Solution

The fourth proportional to 460,828.20, 691,242.30 and 128,404.20 is: 192,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,828.20 : 691,242.30 = 128,404.20 : x
  2. Step 2: Convert to fraction form
    460,828.20/691,242.30 = 128,404.20/x
  3. Step 3: Cross multiply
    460,828.20x = 691,242.30 × 128,404.20
  4. Step 4: Simplify right side
    460,828.20x = 88,758,414,537.66
  5. Step 5: Solve for x
    x = 88,758,414,537.66/460,828.20
  6. Step 6: Final answer
    x = 192,606.30

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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.