Home / 711,158,801,072.38-981,372,866,324.52-385,991,111,442.70

Finding the Fourth Proportional to 711,158,801,072.38, 981,372,866,324.52 and 385,991,111,442.70

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Solution

The fourth proportional to 711,158,801,072.38, 981,372,866,324.52 and 385,991,111,442.70 is: 532,653,470,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,158,801,072.38 : 981,372,866,324.52 = 385,991,111,442.70 : x
  2. Step 2: Convert to fraction form
    711,158,801,072.38/981,372,866,324.52 = 385,991,111,442.70/x
  3. Step 3: Cross multiply
    711,158,801,072.38x = 981,372,866,324.52 × 385,991,111,442.70
  4. Step 4: Simplify right side
    711,158,801,072.38x = 378,801,203,412,309,720,956,928
  5. Step 5: Solve for x
    x = 378,801,203,412,309,720,956,928/711,158,801,072.38
  6. Step 6: Final answer
    x = 532,653,470,421.94

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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.