Home / 743,647.56-1,026,228.75-404,115.78

Finding the Fourth Proportional to 743,647.56, 1,026,228.75 and 404,115.78

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Solution

The fourth proportional to 743,647.56, 1,026,228.75 and 404,115.78 is: 557,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,647.56 : 1,026,228.75 = 404,115.78 : x
  2. Step 2: Convert to fraction form
    743,647.56/1,026,228.75 = 404,115.78/x
  3. Step 3: Cross multiply
    743,647.56x = 1,026,228.75 × 404,115.78
  4. Step 4: Simplify right side
    743,647.56x = 414,715,231,764.68
  5. Step 5: Solve for x
    x = 414,715,231,764.68/743,647.56
  6. Step 6: Final answer
    x = 557,677.12

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.