Home / 428,748,198,474.08-643,192,157,374.28-126,591,345,048.11

Finding the Fourth Proportional to 428,748,198,474.08, 643,192,157,374.28 and 126,591,345,048.11

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Solution

The fourth proportional to 428,748,198,474.08, 643,192,157,374.28 and 126,591,345,048.11 is: 189,907,644,198.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,748,198,474.08 : 643,192,157,374.28 = 126,591,345,048.11 : x
  2. Step 2: Convert to fraction form
    428,748,198,474.08/643,192,157,374.28 = 126,591,345,048.11/x
  3. Step 3: Cross multiply
    428,748,198,474.08x = 643,192,157,374.28 × 126,591,345,048.11
  4. Step 4: Simplify right side
    428,748,198,474.08x = 81,422,560,326,405,758,910,464
  5. Step 5: Solve for x
    x = 81,422,560,326,405,758,910,464/428,748,198,474.08
  6. Step 6: Final answer
    x = 189,907,644,198.13

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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.