Home / 711,158,801,071.38-981,372,866,323.14-385,991,111,441.70

Finding the Fourth Proportional to 711,158,801,071.38, 981,372,866,323.14 and 385,991,111,441.70

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Solution

The fourth proportional to 711,158,801,071.38, 981,372,866,323.14 and 385,991,111,441.70 is: 532,653,470,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,158,801,071.38 : 981,372,866,323.14 = 385,991,111,441.70 : x
  2. Step 2: Convert to fraction form
    711,158,801,071.38/981,372,866,323.14 = 385,991,111,441.70/x
  3. Step 3: Cross multiply
    711,158,801,071.38x = 981,372,866,323.14 × 385,991,111,441.70
  4. Step 4: Simplify right side
    711,158,801,071.38x = 378,801,203,410,795,677,876,224
  5. Step 5: Solve for x
    x = 378,801,203,410,795,677,876,224/711,158,801,071.38
  6. Step 6: Final answer
    x = 532,653,470,420.56

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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.