Home / 825,300.80-1,237,231.20-320,206.40

Finding the Fourth Proportional to 825,300.80, 1,237,231.20 and 320,206.40

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Solution

The fourth proportional to 825,300.80, 1,237,231.20 and 320,206.40 is: 480,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,300.80 : 1,237,231.20 = 320,206.40 : x
  2. Step 2: Convert to fraction form
    825,300.80/1,237,231.20 = 320,206.40/x
  3. Step 3: Cross multiply
    825,300.80x = 1,237,231.20 × 320,206.40
  4. Step 4: Simplify right side
    825,300.80x = 396,169,348,519.68
  5. Step 5: Solve for x
    x = 396,169,348,519.68/825,300.80
  6. Step 6: Final answer
    x = 480,030.25

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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.