Home / 711,139,092,412.68-981,372,673,833.23-385,978,451,262.30

Finding the Fourth Proportional to 711,139,092,412.68, 981,372,673,833.23 and 385,978,451,262.30

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Solution

The fourth proportional to 711,139,092,412.68, 981,372,673,833.23 and 385,978,451,262.30 is: 532,650,656,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,412.68 : 981,372,673,833.23 = 385,978,451,262.30 : x
  2. Step 2: Convert to fraction form
    711,139,092,412.68/981,372,673,833.23 = 385,978,451,262.30/x
  3. Step 3: Cross multiply
    711,139,092,412.68x = 981,372,673,833.23 × 385,978,451,262.30
  4. Step 4: Simplify right side
    711,139,092,412.68x = 378,788,704,757,292,359,221,248
  5. Step 5: Solve for x
    x = 378,788,704,757,292,359,221,248/711,139,092,412.68
  6. Step 6: Final answer
    x = 532,650,656,951.20

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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.