Home / 324,284,288.80-486,911,815.96-280,700,221.90

Finding the Fourth Proportional to 324,284,288.80, 486,911,815.96 and 280,700,221.90

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Solution

The fourth proportional to 324,284,288.80, 486,911,815.96 and 280,700,221.90 is: 421,470,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,284,288.80 : 486,911,815.96 = 280,700,221.90 : x
  2. Step 2: Convert to fraction form
    324,284,288.80/486,911,815.96 = 280,700,221.90/x
  3. Step 3: Cross multiply
    324,284,288.80x = 486,911,815.96 × 280,700,221.90
  4. Step 4: Simplify right side
    324,284,288.80x = 136,676,254,785,703,936
  5. Step 5: Solve for x
    x = 136,676,254,785,703,936/324,284,288.80
  6. Step 6: Final answer
    x = 421,470,479.78

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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.