Home / 655,958,286.19-905,233,189.52-391,663,374.85

Finding the Fourth Proportional to 655,958,286.19, 905,233,189.52 and 391,663,374.85

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Solution

The fourth proportional to 655,958,286.19, 905,233,189.52 and 391,663,374.85 is: 540,501,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,958,286.19 : 905,233,189.52 = 391,663,374.85 : x
  2. Step 2: Convert to fraction form
    655,958,286.19/905,233,189.52 = 391,663,374.85/x
  3. Step 3: Cross multiply
    655,958,286.19x = 905,233,189.52 × 391,663,374.85
  4. Step 4: Simplify right side
    655,958,286.19x = 354,546,686,029,411,456
  5. Step 5: Solve for x
    x = 354,546,686,029,411,456/655,958,286.19
  6. Step 6: Final answer
    x = 540,501,878.69

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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.