Home / 1,318,515.20-1,977,772.80-321,243.20

Finding the Fourth Proportional to 1,318,515.20, 1,977,772.80 and 321,243.20

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Solution

The fourth proportional to 1,318,515.20, 1,977,772.80 and 321,243.20 is: 481,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,515.20 : 1,977,772.80 = 321,243.20 : x
  2. Step 2: Convert to fraction form
    1,318,515.20/1,977,772.80 = 321,243.20/x
  3. Step 3: Cross multiply
    1,318,515.20x = 1,977,772.80 × 321,243.20
  4. Step 4: Simplify right side
    1,318,515.20x = 635,346,063,144.96
  5. Step 5: Solve for x
    x = 635,346,063,144.96/1,318,515.20
  6. Step 6: Final answer
    x = 481,864.80

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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.