Home / 711,457,281.38-981,841,730.07-393,917,533.34

Finding the Fourth Proportional to 711,457,281.38, 981,841,730.07 and 393,917,533.34

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Solution

The fourth proportional to 711,457,281.38, 981,841,730.07 and 393,917,533.34 is: 543,623,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,457,281.38 : 981,841,730.07 = 393,917,533.34 : x
  2. Step 2: Convert to fraction form
    711,457,281.38/981,841,730.07 = 393,917,533.34/x
  3. Step 3: Cross multiply
    711,457,281.38x = 981,841,730.07 × 393,917,533.34
  4. Step 4: Simplify right side
    711,457,281.38x = 386,764,672,435,028,288
  5. Step 5: Solve for x
    x = 386,764,672,435,028,288/711,457,281.38
  6. Step 6: Final answer
    x = 543,623,183.79

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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.