Home / 478,491,076.80-660,318,273.72-258,474,502.80

Finding the Fourth Proportional to 478,491,076.80, 660,318,273.72 and 258,474,502.80

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Solution

The fourth proportional to 478,491,076.80, 660,318,273.72 and 258,474,502.80 is: 356,695,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,491,076.80 : 660,318,273.72 = 258,474,502.80 : x
  2. Step 2: Convert to fraction form
    478,491,076.80/660,318,273.72 = 258,474,502.80/x
  3. Step 3: Cross multiply
    478,491,076.80x = 660,318,273.72 × 258,474,502.80
  4. Step 4: Simplify right side
    478,491,076.80x = 170,675,437,489,531,328
  5. Step 5: Solve for x
    x = 170,675,437,489,531,328/478,491,076.80
  6. Step 6: Final answer
    x = 356,695,131.35

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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.