Home / 1,331,135.54-1,996,703.30-320,257.48

Finding the Fourth Proportional to 1,331,135.54, 1,996,703.30 and 320,257.48

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Solution

The fourth proportional to 1,331,135.54, 1,996,703.30 and 320,257.48 is: 480,386.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,135.54 : 1,996,703.30 = 320,257.48 : x
  2. Step 2: Convert to fraction form
    1,331,135.54/1,996,703.30 = 320,257.48/x
  3. Step 3: Cross multiply
    1,331,135.54x = 1,996,703.30 × 320,257.48
  4. Step 4: Simplify right side
    1,331,135.54x = 639,459,167,165.68
  5. Step 5: Solve for x
    x = 639,459,167,165.68/1,331,135.54
  6. Step 6: Final answer
    x = 480,386.22

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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.