Home / 655,958,289.70-905,233,194.35-391,663,378.36

Finding the Fourth Proportional to 655,958,289.70, 905,233,194.35 and 391,663,378.36

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Solution

The fourth proportional to 655,958,289.70, 905,233,194.35 and 391,663,378.36 is: 540,501,883.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,958,289.70 : 905,233,194.35 = 391,663,378.36 : x
  2. Step 2: Convert to fraction form
    655,958,289.70/905,233,194.35 = 391,663,378.36/x
  3. Step 3: Cross multiply
    655,958,289.70x = 905,233,194.35 × 391,663,378.36
  4. Step 4: Simplify right side
    655,958,289.70x = 354,546,691,096,251,008
  5. Step 5: Solve for x
    x = 354,546,691,096,251,008/655,958,289.70
  6. Step 6: Final answer
    x = 540,501,883.53

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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.