Home / 655,958,288.45-905,233,192.62-391,663,377.11

Finding the Fourth Proportional to 655,958,288.45, 905,233,192.62 and 391,663,377.11

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Solution

The fourth proportional to 655,958,288.45, 905,233,192.62 and 391,663,377.11 is: 540,501,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,958,288.45 : 905,233,192.62 = 391,663,377.11 : x
  2. Step 2: Convert to fraction form
    655,958,288.45/905,233,192.62 = 391,663,377.11/x
  3. Step 3: Cross multiply
    655,958,288.45x = 905,233,192.62 × 391,663,377.11
  4. Step 4: Simplify right side
    655,958,288.45x = 354,546,689,289,090,176
  5. Step 5: Solve for x
    x = 354,546,689,289,090,176/655,958,288.45
  6. Step 6: Final answer
    x = 540,501,881.80

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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.