Home / 621,664,673.85-857,892,808.17-339,407,105.45

Finding the Fourth Proportional to 621,664,673.85, 857,892,808.17 and 339,407,105.45

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Solution

The fourth proportional to 621,664,673.85, 857,892,808.17 and 339,407,105.45 is: 468,379,380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,664,673.85 : 857,892,808.17 = 339,407,105.45 : x
  2. Step 2: Convert to fraction form
    621,664,673.85/857,892,808.17 = 339,407,105.45/x
  3. Step 3: Cross multiply
    621,664,673.85x = 857,892,808.17 × 339,407,105.45
  4. Step 4: Simplify right side
    621,664,673.85x = 291,174,914,803,062,336
  5. Step 5: Solve for x
    x = 291,174,914,803,062,336/621,664,673.85
  6. Step 6: Final answer
    x = 468,379,380.48

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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.