Home / 568,391,974.55-784,382,140.47-320,873,328.80

Finding the Fourth Proportional to 568,391,974.55, 784,382,140.47 and 320,873,328.80

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Solution

The fourth proportional to 568,391,974.55, 784,382,140.47 and 320,873,328.80 is: 442,805,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,391,974.55 : 784,382,140.47 = 320,873,328.80 : x
  2. Step 2: Convert to fraction form
    568,391,974.55/784,382,140.47 = 320,873,328.80/x
  3. Step 3: Cross multiply
    568,391,974.55x = 784,382,140.47 × 320,873,328.80
  4. Step 4: Simplify right side
    568,391,974.55x = 251,687,308,463,878,112
  5. Step 5: Solve for x
    x = 251,687,308,463,878,112/568,391,974.55
  6. Step 6: Final answer
    x = 442,805,879.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.