Home / 429,215,511.20-643,823,266.80-106,099,383.20

Finding the Fourth Proportional to 429,215,511.20, 643,823,266.80 and 106,099,383.20

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Solution

The fourth proportional to 429,215,511.20, 643,823,266.80 and 106,099,383.20 is: 159,149,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,215,511.20 : 643,823,266.80 = 106,099,383.20 : x
  2. Step 2: Convert to fraction form
    429,215,511.20/643,823,266.80 = 106,099,383.20/x
  3. Step 3: Cross multiply
    429,215,511.20x = 643,823,266.80 × 106,099,383.20
  4. Step 4: Simplify right side
    429,215,511.20x = 68,309,251,497,289,032
  5. Step 5: Solve for x
    x = 68,309,251,497,289,032/429,215,511.20
  6. Step 6: Final answer
    x = 159,149,074.80

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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.