Home / 505,488,769.20-758,233,153.80-423,859,431.60

Finding the Fourth Proportional to 505,488,769.20, 758,233,153.80 and 423,859,431.60

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Solution

The fourth proportional to 505,488,769.20, 758,233,153.80 and 423,859,431.60 is: 635,789,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,488,769.20 : 758,233,153.80 = 423,859,431.60 : x
  2. Step 2: Convert to fraction form
    505,488,769.20/758,233,153.80 = 423,859,431.60/x
  3. Step 3: Cross multiply
    505,488,769.20x = 758,233,153.80 × 423,859,431.60
  4. Step 4: Simplify right side
    505,488,769.20x = 321,384,273,589,943,360
  5. Step 5: Solve for x
    x = 321,384,273,589,943,360/505,488,769.20
  6. Step 6: Final answer
    x = 635,789,147.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.