Home / 397,009,011-547,887,551-220,809,747.45

Finding the Fourth Proportional to 397,009,011, 547,887,551 and 220,809,747.45

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Solution

The fourth proportional to 397,009,011, 547,887,551 and 220,809,747.45 is: 304,725,858.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,009,011 : 547,887,551 = 220,809,747.45 : x
  2. Step 2: Convert to fraction form
    397,009,011/547,887,551 = 220,809,747.45/x
  3. Step 3: Cross multiply
    397,009,011x = 547,887,551 × 220,809,747.45
  4. Step 4: Simplify right side
    397,009,011x = 120,978,911,767,308,992
  5. Step 5: Solve for x
    x = 120,978,911,767,308,992/397,009,011
  6. Step 6: Final answer
    x = 304,725,858.65

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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.