Home / 740,879.20-1,111,837.20-320,456.80

Finding the Fourth Proportional to 740,879.20, 1,111,837.20 and 320,456.80

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Solution

The fourth proportional to 740,879.20, 1,111,837.20 and 320,456.80 is: 480,909.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,879.20 : 1,111,837.20 = 320,456.80 : x
  2. Step 2: Convert to fraction form
    740,879.20/1,111,837.20 = 320,456.80/x
  3. Step 3: Cross multiply
    740,879.20x = 1,111,837.20 × 320,456.80
  4. Step 4: Simplify right side
    740,879.20x = 356,295,791,232.96
  5. Step 5: Solve for x
    x = 356,295,791,232.96/740,879.20
  6. Step 6: Final answer
    x = 480,909.43

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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.