Home / 515,778,857.90-773,668,286.85-257,498,531.90

Finding the Fourth Proportional to 515,778,857.90, 773,668,286.85 and 257,498,531.90

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Solution

The fourth proportional to 515,778,857.90, 773,668,286.85 and 257,498,531.90 is: 386,247,797.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,778,857.90 : 773,668,286.85 = 257,498,531.90 : x
  2. Step 2: Convert to fraction form
    515,778,857.90/773,668,286.85 = 257,498,531.90/x
  3. Step 3: Cross multiply
    515,778,857.90x = 773,668,286.85 × 257,498,531.90
  4. Step 4: Simplify right side
    515,778,857.90x = 199,218,448,041,463,072
  5. Step 5: Solve for x
    x = 199,218,448,041,463,072/515,778,857.90
  6. Step 6: Final answer
    x = 386,247,797.85

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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.