Home / 655,958,289.45-905,233,194-391,663,378.11

Finding the Fourth Proportional to 655,958,289.45, 905,233,194 and 391,663,378.11

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Solution

The fourth proportional to 655,958,289.45, 905,233,194 and 391,663,378.11 is: 540,501,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,958,289.45 : 905,233,194 = 391,663,378.11 : x
  2. Step 2: Convert to fraction form
    655,958,289.45/905,233,194 = 391,663,378.11/x
  3. Step 3: Cross multiply
    655,958,289.45x = 905,233,194 × 391,663,378.11
  4. Step 4: Simplify right side
    655,958,289.45x = 354,546,690,739,345,024
  5. Step 5: Solve for x
    x = 354,546,690,739,345,024/655,958,289.45
  6. Step 6: Final answer
    x = 540,501,883.19

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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.