Home / 553,321,836.21-763,936,297.61-344,784,342.45

Finding the Fourth Proportional to 553,321,836.21, 763,936,297.61 and 344,784,342.45

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Solution

The fourth proportional to 553,321,836.21, 763,936,297.61 and 344,784,342.45 is: 476,021,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,321,836.21 : 763,936,297.61 = 344,784,342.45 : x
  2. Step 2: Convert to fraction form
    553,321,836.21/763,936,297.61 = 344,784,342.45/x
  3. Step 3: Cross multiply
    553,321,836.21x = 763,936,297.61 × 344,784,342.45
  4. Step 4: Simplify right side
    553,321,836.21x = 263,393,274,043,427,424
  5. Step 5: Solve for x
    x = 263,393,274,043,427,424/553,321,836.21
  6. Step 6: Final answer
    x = 476,021,831.79

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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.