Home / 693,359.80-1,040,039.70-320,111.80

Finding the Fourth Proportional to 693,359.80, 1,040,039.70 and 320,111.80

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Solution

The fourth proportional to 693,359.80, 1,040,039.70 and 320,111.80 is: 480,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,359.80 : 1,040,039.70 = 320,111.80 : x
  2. Step 2: Convert to fraction form
    693,359.80/1,040,039.70 = 320,111.80/x
  3. Step 3: Cross multiply
    693,359.80x = 1,040,039.70 × 320,111.80
  4. Step 4: Simplify right side
    693,359.80x = 332,928,980,438.46
  5. Step 5: Solve for x
    x = 332,928,980,438.46/693,359.80
  6. Step 6: Final answer
    x = 480,167.70

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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.