Home / 485,441,266.56-670,091,124.44-318,188,306.12

Finding the Fourth Proportional to 485,441,266.56, 670,091,124.44 and 318,188,306.12

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Solution

The fourth proportional to 485,441,266.56, 670,091,124.44 and 318,188,306.12 is: 439,219,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,441,266.56 : 670,091,124.44 = 318,188,306.12 : x
  2. Step 2: Convert to fraction form
    485,441,266.56/670,091,124.44 = 318,188,306.12/x
  3. Step 3: Cross multiply
    485,441,266.56x = 670,091,124.44 × 318,188,306.12
  4. Step 4: Simplify right side
    485,441,266.56x = 213,215,159,831,609,760
  5. Step 5: Solve for x
    x = 213,215,159,831,609,760/485,441,266.56
  6. Step 6: Final answer
    x = 439,219,272.28

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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.