Home / 628,992,022.80-943,488,034.20-399,976,381.20

Finding the Fourth Proportional to 628,992,022.80, 943,488,034.20 and 399,976,381.20

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Solution

The fourth proportional to 628,992,022.80, 943,488,034.20 and 399,976,381.20 is: 599,964,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,992,022.80 : 943,488,034.20 = 399,976,381.20 : x
  2. Step 2: Convert to fraction form
    628,992,022.80/943,488,034.20 = 399,976,381.20/x
  3. Step 3: Cross multiply
    628,992,022.80x = 943,488,034.20 × 399,976,381.20
  4. Step 4: Simplify right side
    628,992,022.80x = 377,372,929,624,817,856
  5. Step 5: Solve for x
    x = 377,372,929,624,817,856/628,992,022.80
  6. Step 6: Final answer
    x = 599,964,571.80

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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.