Home / 515,642,467.14-711,586,681.42-280,694,911.22

Finding the Fourth Proportional to 515,642,467.14, 711,586,681.42 and 280,694,911.22

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Solution

The fourth proportional to 515,642,467.14, 711,586,681.42 and 280,694,911.22 is: 387,359,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,642,467.14 : 711,586,681.42 = 280,694,911.22 : x
  2. Step 2: Convert to fraction form
    515,642,467.14/711,586,681.42 = 280,694,911.22/x
  3. Step 3: Cross multiply
    515,642,467.14x = 711,586,681.42 × 280,694,911.22
  4. Step 4: Simplify right side
    515,642,467.14x = 199,738,760,366,521,344
  5. Step 5: Solve for x
    x = 199,738,760,366,521,344/515,642,467.14
  6. Step 6: Final answer
    x = 387,359,019.27

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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.