Home / 711,139,092,418.05-981,372,673,840.63-385,978,451,267.66

Finding the Fourth Proportional to 711,139,092,418.05, 981,372,673,840.63 and 385,978,451,267.66

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Solution

The fourth proportional to 711,139,092,418.05, 981,372,673,840.63 and 385,978,451,267.66 is: 532,650,656,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,418.05 : 981,372,673,840.63 = 385,978,451,267.66 : x
  2. Step 2: Convert to fraction form
    711,139,092,418.05/981,372,673,840.63 = 385,978,451,267.66/x
  3. Step 3: Cross multiply
    711,139,092,418.05x = 981,372,673,840.63 × 385,978,451,267.66
  4. Step 4: Simplify right side
    711,139,092,418.05x = 378,788,704,765,408,773,668,864
  5. Step 5: Solve for x
    x = 378,788,704,765,408,773,668,864/711,139,092,418.05
  6. Step 6: Final answer
    x = 532,650,656,958.59

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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.