Home / 505,489,969.20-758,234,953.80-423,860,631.60

Finding the Fourth Proportional to 505,489,969.20, 758,234,953.80 and 423,860,631.60

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Solution

The fourth proportional to 505,489,969.20, 758,234,953.80 and 423,860,631.60 is: 635,790,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,489,969.20 : 758,234,953.80 = 423,860,631.60 : x
  2. Step 2: Convert to fraction form
    505,489,969.20/758,234,953.80 = 423,860,631.60/x
  3. Step 3: Cross multiply
    505,489,969.20x = 758,234,953.80 × 423,860,631.60
  4. Step 4: Simplify right side
    505,489,969.20x = 321,385,946,418,864,832
  5. Step 5: Solve for x
    x = 321,385,946,418,864,832/505,489,969.20
  6. Step 6: Final answer
    x = 635,790,947.40

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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.