Home / 711,139,092,452.82-981,372,673,888.65-385,978,451,302.57

Finding the Fourth Proportional to 711,139,092,452.82, 981,372,673,888.65 and 385,978,451,302.57

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Solution

The fourth proportional to 711,139,092,452.82, 981,372,673,888.65 and 385,978,451,302.57 is: 532,650,657,006.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,452.82 : 981,372,673,888.65 = 385,978,451,302.57 : x
  2. Step 2: Convert to fraction form
    711,139,092,452.82/981,372,673,888.65 = 385,978,451,302.57/x
  3. Step 3: Cross multiply
    711,139,092,452.82x = 981,372,673,888.65 × 385,978,451,302.57
  4. Step 4: Simplify right side
    711,139,092,452.82x = 378,788,704,818,203,249,868,800
  5. Step 5: Solve for x
    x = 378,788,704,818,203,249,868,800/711,139,092,452.82
  6. Step 6: Final answer
    x = 532,650,657,006.79

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Double scale
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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.