Home / 515,466,996.78-711,367,880.05-303,782,761.56

Finding the Fourth Proportional to 515,466,996.78, 711,367,880.05 and 303,782,761.56

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Solution

The fourth proportional to 515,466,996.78, 711,367,880.05 and 303,782,761.56 is: 419,234,015.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,466,996.78 : 711,367,880.05 = 303,782,761.56 : x
  2. Step 2: Convert to fraction form
    515,466,996.78/711,367,880.05 = 303,782,761.56/x
  3. Step 3: Cross multiply
    515,466,996.78x = 711,367,880.05 × 303,782,761.56
  4. Step 4: Simplify right side
    515,466,996.78x = 216,101,299,086,671,808
  5. Step 5: Solve for x
    x = 216,101,299,086,671,808/515,466,996.78
  6. Step 6: Final answer
    x = 419,234,015.83

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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.