Home / 711,139,092,030.90-981,372,673,305.54-385,978,450,879.44

Finding the Fourth Proportional to 711,139,092,030.90, 981,372,673,305.54 and 385,978,450,879.44

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Solution

The fourth proportional to 711,139,092,030.90, 981,372,673,305.54 and 385,978,450,879.44 is: 532,650,656,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,030.90 : 981,372,673,305.54 = 385,978,450,879.44 : x
  2. Step 2: Convert to fraction form
    711,139,092,030.90/981,372,673,305.54 = 385,978,450,879.44/x
  3. Step 3: Cross multiply
    711,139,092,030.90x = 981,372,673,305.54 × 385,978,450,879.44
  4. Step 4: Simplify right side
    711,139,092,030.90x = 378,788,704,177,887,111,020,544
  5. Step 5: Solve for x
    x = 378,788,704,177,887,111,020,544/711,139,092,030.90
  6. Step 6: Final answer
    x = 532,650,656,422.40

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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.