Home / 711,139,092,033.15-981,372,673,308.65-385,978,450,881.68

Finding the Fourth Proportional to 711,139,092,033.15, 981,372,673,308.65 and 385,978,450,881.68

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Solution

The fourth proportional to 711,139,092,033.15, 981,372,673,308.65 and 385,978,450,881.68 is: 532,650,656,425.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,033.15 : 981,372,673,308.65 = 385,978,450,881.68 : x
  2. Step 2: Convert to fraction form
    711,139,092,033.15/981,372,673,308.65 = 385,978,450,881.68/x
  3. Step 3: Cross multiply
    711,139,092,033.15x = 981,372,673,308.65 × 385,978,450,881.68
  4. Step 4: Simplify right side
    711,139,092,033.15x = 378,788,704,181,285,772,328,960
  5. Step 5: Solve for x
    x = 378,788,704,181,285,772,328,960/711,139,092,033.15
  6. Step 6: Final answer
    x = 532,650,656,425.49

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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.