Home / 320,827,006.80-481,240,510.20-78,489,910.80

Finding the Fourth Proportional to 320,827,006.80, 481,240,510.20 and 78,489,910.80

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Solution

The fourth proportional to 320,827,006.80, 481,240,510.20 and 78,489,910.80 is: 117,734,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,827,006.80 : 481,240,510.20 = 78,489,910.80 : x
  2. Step 2: Convert to fraction form
    320,827,006.80/481,240,510.20 = 78,489,910.80/x
  3. Step 3: Cross multiply
    320,827,006.80x = 481,240,510.20 × 78,489,910.80
  4. Step 4: Simplify right side
    320,827,006.80x = 37,772,524,718,944,488
  5. Step 5: Solve for x
    x = 37,772,524,718,944,488/320,827,006.80
  6. Step 6: Final answer
    x = 117,734,866.20

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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.