Home / 1,188,137.74-1,781,494.86-378,172.30

Finding the Fourth Proportional to 1,188,137.74, 1,781,494.86 and 378,172.30

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Solution

The fourth proportional to 1,188,137.74, 1,781,494.86 and 378,172.30 is: 567,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,137.74 : 1,781,494.86 = 378,172.30 : x
  2. Step 2: Convert to fraction form
    1,188,137.74/1,781,494.86 = 378,172.30/x
  3. Step 3: Cross multiply
    1,188,137.74x = 1,781,494.86 × 378,172.30
  4. Step 4: Simplify right side
    1,188,137.74x = 673,712,008,644.38
  5. Step 5: Solve for x
    x = 673,712,008,644.38/1,188,137.74
  6. Step 6: Final answer
    x = 567,031.91

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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.