Home / 621,985,977.37-858,334,997.92-339,728,359.46

Finding the Fourth Proportional to 621,985,977.37, 858,334,997.92 and 339,728,359.46

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Solution

The fourth proportional to 621,985,977.37, 858,334,997.92 and 339,728,359.46 is: 468,822,049.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,985,977.37 : 858,334,997.92 = 339,728,359.46 : x
  2. Step 2: Convert to fraction form
    621,985,977.37/858,334,997.92 = 339,728,359.46/x
  3. Step 3: Cross multiply
    621,985,977.37x = 858,334,997.92 × 339,728,359.46
  4. Step 4: Simplify right side
    621,985,977.37x = 291,600,740,711,760,640
  5. Step 5: Solve for x
    x = 291,600,740,711,760,640/621,985,977.37
  6. Step 6: Final answer
    x = 468,822,049.57

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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.