Home / 485,441,267.56-670,091,125.82-318,188,307.12

Finding the Fourth Proportional to 485,441,267.56, 670,091,125.82 and 318,188,307.12

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Solution

The fourth proportional to 485,441,267.56, 670,091,125.82 and 318,188,307.12 is: 439,219,273.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,441,267.56 : 670,091,125.82 = 318,188,307.12 : x
  2. Step 2: Convert to fraction form
    485,441,267.56/670,091,125.82 = 318,188,307.12/x
  3. Step 3: Cross multiply
    485,441,267.56x = 670,091,125.82 × 318,188,307.12
  4. Step 4: Simplify right side
    485,441,267.56x = 213,215,160,940,800,736
  5. Step 5: Solve for x
    x = 213,215,160,940,800,736/485,441,267.56
  6. Step 6: Final answer
    x = 439,219,273.66

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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.