Home / 826,486.56-1,239,248.16-320,456.39

Finding the Fourth Proportional to 826,486.56, 1,239,248.16 and 320,456.39

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Solution

The fourth proportional to 826,486.56, 1,239,248.16 and 320,456.39 is: 480,497.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,486.56 : 1,239,248.16 = 320,456.39 : x
  2. Step 2: Convert to fraction form
    826,486.56/1,239,248.16 = 320,456.39/x
  3. Step 3: Cross multiply
    826,486.56x = 1,239,248.16 × 320,456.39
  4. Step 4: Simplify right side
    826,486.56x = 397,124,985,471.50
  5. Step 5: Solve for x
    x = 397,124,985,471.50/826,486.56
  6. Step 6: Final answer
    x = 480,497.81

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Double scale
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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.