Home / 711,139,092,414.21-981,372,673,835.40-385,978,451,263.86

Finding the Fourth Proportional to 711,139,092,414.21, 981,372,673,835.40 and 385,978,451,263.86

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Solution

The fourth proportional to 711,139,092,414.21, 981,372,673,835.40 and 385,978,451,263.86 is: 532,650,656,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,414.21 : 981,372,673,835.40 = 385,978,451,263.86 : x
  2. Step 2: Convert to fraction form
    711,139,092,414.21/981,372,673,835.40 = 385,978,451,263.86/x
  3. Step 3: Cross multiply
    711,139,092,414.21x = 981,372,673,835.40 × 385,978,451,263.86
  4. Step 4: Simplify right side
    711,139,092,414.21x = 378,788,704,759,660,899,467,264
  5. Step 5: Solve for x
    x = 378,788,704,759,660,899,467,264/711,139,092,414.21
  6. Step 6: Final answer
    x = 532,650,656,953.38

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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.