Home / 478,491,070.80-660,318,265.44-258,474,496.80

Finding the Fourth Proportional to 478,491,070.80, 660,318,265.44 and 258,474,496.80

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Solution

The fourth proportional to 478,491,070.80, 660,318,265.44 and 258,474,496.80 is: 356,695,123.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,491,070.80 : 660,318,265.44 = 258,474,496.80 : x
  2. Step 2: Convert to fraction form
    478,491,070.80/660,318,265.44 = 258,474,496.80/x
  3. Step 3: Cross multiply
    478,491,070.80x = 660,318,265.44 × 258,474,496.80
  4. Step 4: Simplify right side
    478,491,070.80x = 170,675,431,387,452,864
  5. Step 5: Solve for x
    x = 170,675,431,387,452,864/478,491,070.80
  6. Step 6: Final answer
    x = 356,695,123.07

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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.