Home / 1,279,053.70-1,918,580.55-747,175.30

Finding the Fourth Proportional to 1,279,053.70, 1,918,580.55 and 747,175.30

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Solution

The fourth proportional to 1,279,053.70, 1,918,580.55 and 747,175.30 is: 1,120,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,053.70 : 1,918,580.55 = 747,175.30 : x
  2. Step 2: Convert to fraction form
    1,279,053.70/1,918,580.55 = 747,175.30/x
  3. Step 3: Cross multiply
    1,279,053.70x = 1,918,580.55 × 747,175.30
  4. Step 4: Simplify right side
    1,279,053.70x = 1,433,515,998,020.42
  5. Step 5: Solve for x
    x = 1,433,515,998,020.42/1,279,053.70
  6. Step 6: Final answer
    x = 1,120,762.95

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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.