Home / 728,427.80-1,092,641.70-413,499.80

Finding the Fourth Proportional to 728,427.80, 1,092,641.70 and 413,499.80

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Solution

The fourth proportional to 728,427.80, 1,092,641.70 and 413,499.80 is: 620,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,427.80 : 1,092,641.70 = 413,499.80 : x
  2. Step 2: Convert to fraction form
    728,427.80/1,092,641.70 = 413,499.80/x
  3. Step 3: Cross multiply
    728,427.80x = 1,092,641.70 × 413,499.80
  4. Step 4: Simplify right side
    728,427.80x = 451,807,124,421.66
  5. Step 5: Solve for x
    x = 451,807,124,421.66/728,427.80
  6. Step 6: Final answer
    x = 620,249.70

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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.