Home / 515,466,894.42-711,367,738.54-303,782,659.20

Finding the Fourth Proportional to 515,466,894.42, 711,367,738.54 and 303,782,659.20

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Solution

The fourth proportional to 515,466,894.42, 711,367,738.54 and 303,782,659.20 is: 419,233,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,466,894.42 : 711,367,738.54 = 303,782,659.20 : x
  2. Step 2: Convert to fraction form
    515,466,894.42/711,367,738.54 = 303,782,659.20/x
  3. Step 3: Cross multiply
    515,466,894.42x = 711,367,738.54 × 303,782,659.20
  4. Step 4: Simplify right side
    515,466,894.42x = 216,101,183,283,728,416
  5. Step 5: Solve for x
    x = 216,101,183,283,728,416/515,466,894.42
  6. Step 6: Final answer
    x = 419,233,874.42

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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.