Home / 511,261,686.71-765,782,731.90-313,926,101.21

Finding the Fourth Proportional to 511,261,686.71, 765,782,731.90 and 313,926,101.21

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Solution

The fourth proportional to 511,261,686.71, 765,782,731.90 and 313,926,101.21 is: 470,207,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,261,686.71 : 765,782,731.90 = 313,926,101.21 : x
  2. Step 2: Convert to fraction form
    511,261,686.71/765,782,731.90 = 313,926,101.21/x
  3. Step 3: Cross multiply
    511,261,686.71x = 765,782,731.90 × 313,926,101.21
  4. Step 4: Simplify right side
    511,261,686.71x = 240,399,187,401,616,544
  5. Step 5: Solve for x
    x = 240,399,187,401,616,544/511,261,686.71
  6. Step 6: Final answer
    x = 470,207,710.95

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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.