Home / 442,870,472.80-664,305,709.20-328,079,216.80

Finding the Fourth Proportional to 442,870,472.80, 664,305,709.20 and 328,079,216.80

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Solution

The fourth proportional to 442,870,472.80, 664,305,709.20 and 328,079,216.80 is: 492,118,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,870,472.80 : 664,305,709.20 = 328,079,216.80 : x
  2. Step 2: Convert to fraction form
    442,870,472.80/664,305,709.20 = 328,079,216.80/x
  3. Step 3: Cross multiply
    442,870,472.80x = 664,305,709.20 × 328,079,216.80
  4. Step 4: Simplify right side
    442,870,472.80x = 217,944,896,790,104,576
  5. Step 5: Solve for x
    x = 217,944,896,790,104,576/442,870,472.80
  6. Step 6: Final answer
    x = 492,118,825.20

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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.