Home / 621,985,976.49-858,334,996.71-339,728,358.59

Finding the Fourth Proportional to 621,985,976.49, 858,334,996.71 and 339,728,358.59

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Solution

The fourth proportional to 621,985,976.49, 858,334,996.71 and 339,728,358.59 is: 468,822,048.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,985,976.49 : 858,334,996.71 = 339,728,358.59 : x
  2. Step 2: Convert to fraction form
    621,985,976.49/858,334,996.71 = 339,728,358.59/x
  3. Step 3: Cross multiply
    621,985,976.49x = 858,334,996.71 × 339,728,358.59
  4. Step 4: Simplify right side
    621,985,976.49x = 291,600,739,552,641,344
  5. Step 5: Solve for x
    x = 291,600,739,552,641,344/621,985,976.49
  6. Step 6: Final answer
    x = 468,822,048.37

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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.