Home / 687,297,281.67-948,670,112.61-449,178,286.79

Finding the Fourth Proportional to 687,297,281.67, 948,670,112.61 and 449,178,286.79

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Solution

The fourth proportional to 687,297,281.67, 948,670,112.61 and 449,178,286.79 is: 619,996,655.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,297,281.67 : 948,670,112.61 = 449,178,286.79 : x
  2. Step 2: Convert to fraction form
    687,297,281.67/948,670,112.61 = 449,178,286.79/x
  3. Step 3: Cross multiply
    687,297,281.67x = 948,670,112.61 × 449,178,286.79
  4. Step 4: Simplify right side
    687,297,281.67x = 426,122,015,906,292,864
  5. Step 5: Solve for x
    x = 426,122,015,906,292,864/687,297,281.67
  6. Step 6: Final answer
    x = 619,996,655.41

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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.