Home / 711,139,092,046.57-981,372,673,326.90-385,978,450,895.05

Finding the Fourth Proportional to 711,139,092,046.57, 981,372,673,326.90 and 385,978,450,895.05

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Solution

The fourth proportional to 711,139,092,046.57, 981,372,673,326.90 and 385,978,450,895.05 is: 532,650,656,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,046.57 : 981,372,673,326.90 = 385,978,450,895.05 : x
  2. Step 2: Convert to fraction form
    711,139,092,046.57/981,372,673,326.90 = 385,978,450,895.05/x
  3. Step 3: Cross multiply
    711,139,092,046.57x = 981,372,673,326.90 × 385,978,450,895.05
  4. Step 4: Simplify right side
    711,139,092,046.57x = 378,788,704,201,450,845,110,272
  5. Step 5: Solve for x
    x = 378,788,704,201,450,845,110,272/711,139,092,046.57
  6. Step 6: Final answer
    x = 532,650,656,443.80

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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.