Home / 621,985,976.12-858,334,996.19-339,728,358.22

Finding the Fourth Proportional to 621,985,976.12, 858,334,996.19 and 339,728,358.22

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Solution

The fourth proportional to 621,985,976.12, 858,334,996.19 and 339,728,358.22 is: 468,822,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,985,976.12 : 858,334,996.19 = 339,728,358.22 : x
  2. Step 2: Convert to fraction form
    621,985,976.12/858,334,996.19 = 339,728,358.22/x
  3. Step 3: Cross multiply
    621,985,976.12x = 858,334,996.19 × 339,728,358.22
  4. Step 4: Simplify right side
    621,985,976.12x = 291,600,739,054,107,008
  5. Step 5: Solve for x
    x = 291,600,739,054,107,008/621,985,976.12
  6. Step 6: Final answer
    x = 468,822,047.84

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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.