Home / 1,320,829.20-1,981,243.80-479,271.60

Finding the Fourth Proportional to 1,320,829.20, 1,981,243.80 and 479,271.60

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Solution

The fourth proportional to 1,320,829.20, 1,981,243.80 and 479,271.60 is: 718,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,829.20 : 1,981,243.80 = 479,271.60 : x
  2. Step 2: Convert to fraction form
    1,320,829.20/1,981,243.80 = 479,271.60/x
  3. Step 3: Cross multiply
    1,320,829.20x = 1,981,243.80 × 479,271.60
  4. Step 4: Simplify right side
    1,320,829.20x = 949,553,886,016.08
  5. Step 5: Solve for x
    x = 949,553,886,016.08/1,320,829.20
  6. Step 6: Final answer
    x = 718,907.40

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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.