Home / 621,723,354.55-857,990,171.54-339,476,986.22

Finding the Fourth Proportional to 621,723,354.55, 857,990,171.54 and 339,476,986.22

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Solution

The fourth proportional to 621,723,354.55, 857,990,171.54 and 339,476,986.22 is: 468,484,761.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,723,354.55 : 857,990,171.54 = 339,476,986.22 : x
  2. Step 2: Convert to fraction form
    621,723,354.55/857,990,171.54 = 339,476,986.22/x
  3. Step 3: Cross multiply
    621,723,354.55x = 857,990,171.54 × 339,476,986.22
  4. Step 4: Simplify right side
    621,723,354.55x = 291,267,917,640,780,032
  5. Step 5: Solve for x
    x = 291,267,917,640,780,032/621,723,354.55
  6. Step 6: Final answer
    x = 468,484,761.77

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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.