Home / 711,139,092,430.32-981,372,673,857.69-385,978,451,280.03

Finding the Fourth Proportional to 711,139,092,430.32, 981,372,673,857.69 and 385,978,451,280.03

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Solution

The fourth proportional to 711,139,092,430.32, 981,372,673,857.69 and 385,978,451,280.03 is: 532,650,656,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,430.32 : 981,372,673,857.69 = 385,978,451,280.03 : x
  2. Step 2: Convert to fraction form
    711,139,092,430.32/981,372,673,857.69 = 385,978,451,280.03/x
  3. Step 3: Cross multiply
    711,139,092,430.32x = 981,372,673,857.69 × 385,978,451,280.03
  4. Step 4: Simplify right side
    711,139,092,430.32x = 378,788,704,784,133,153,357,824
  5. Step 5: Solve for x
    x = 378,788,704,784,133,153,357,824/711,139,092,430.32
  6. Step 6: Final answer
    x = 532,650,656,975.73

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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.