Home / 766,483,660.80-1,149,725,491.20-421,259,587.20

Finding the Fourth Proportional to 766,483,660.80, 1,149,725,491.20 and 421,259,587.20

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Solution

The fourth proportional to 766,483,660.80, 1,149,725,491.20 and 421,259,587.20 is: 631,889,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,483,660.80 : 1,149,725,491.20 = 421,259,587.20 : x
  2. Step 2: Convert to fraction form
    766,483,660.80/1,149,725,491.20 = 421,259,587.20/x
  3. Step 3: Cross multiply
    766,483,660.80x = 1,149,725,491.20 × 421,259,587.20
  4. Step 4: Simplify right side
    766,483,660.80x = 484,332,885,816,229,248
  5. Step 5: Solve for x
    x = 484,332,885,816,229,248/766,483,660.80
  6. Step 6: Final answer
    x = 631,889,380.80

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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.