Home / 743,493.67-1,115,238.45-211,015.21

Finding the Fourth Proportional to 743,493.67, 1,115,238.45 and 211,015.21

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Solution

The fourth proportional to 743,493.67, 1,115,238.45 and 211,015.21 is: 316,522.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,493.67 : 1,115,238.45 = 211,015.21 : x
  2. Step 2: Convert to fraction form
    743,493.67/1,115,238.45 = 211,015.21/x
  3. Step 3: Cross multiply
    743,493.67x = 1,115,238.45 × 211,015.21
  4. Step 4: Simplify right side
    743,493.67x = 235,332,275,726.83
  5. Step 5: Solve for x
    x = 235,332,275,726.83/743,493.67
  6. Step 6: Final answer
    x = 316,522.23

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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.