Home / 655,958,290.70-905,233,195.73-391,663,379.36

Finding the Fourth Proportional to 655,958,290.70, 905,233,195.73 and 391,663,379.36

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Solution

The fourth proportional to 655,958,290.70, 905,233,195.73 and 391,663,379.36 is: 540,501,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,958,290.70 : 905,233,195.73 = 391,663,379.36 : x
  2. Step 2: Convert to fraction form
    655,958,290.70/905,233,195.73 = 391,663,379.36/x
  3. Step 3: Cross multiply
    655,958,290.70x = 905,233,195.73 × 391,663,379.36
  4. Step 4: Simplify right side
    655,958,290.70x = 354,546,692,541,979,648
  5. Step 5: Solve for x
    x = 354,546,692,541,979,648/655,958,290.70
  6. Step 6: Final answer
    x = 540,501,884.91

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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.