Home / 515,466,995.78-711,367,878.67-303,782,760.56

Finding the Fourth Proportional to 515,466,995.78, 711,367,878.67 and 303,782,760.56

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Solution

The fourth proportional to 515,466,995.78, 711,367,878.67 and 303,782,760.56 is: 419,234,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,466,995.78 : 711,367,878.67 = 303,782,760.56 : x
  2. Step 2: Convert to fraction form
    515,466,995.78/711,367,878.67 = 303,782,760.56/x
  3. Step 3: Cross multiply
    515,466,995.78x = 711,367,878.67 × 303,782,760.56
  4. Step 4: Simplify right side
    515,466,995.78x = 216,101,297,956,083,744
  5. Step 5: Solve for x
    x = 216,101,297,956,083,744/515,466,995.78
  6. Step 6: Final answer
    x = 419,234,014.45

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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.