Home / 1,511,672.90-2,086,029.85-938,700.78

Finding the Fourth Proportional to 1,511,672.90, 2,086,029.85 and 938,700.78

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Solution

The fourth proportional to 1,511,672.90, 2,086,029.85 and 938,700.78 is: 1,295,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511,672.90 : 2,086,029.85 = 938,700.78 : x
  2. Step 2: Convert to fraction form
    1,511,672.90/2,086,029.85 = 938,700.78/x
  3. Step 3: Cross multiply
    1,511,672.90x = 2,086,029.85 × 938,700.78
  4. Step 4: Simplify right side
    1,511,672.90x = 1,958,157,847,298.28
  5. Step 5: Solve for x
    x = 1,958,157,847,298.28/1,511,672.90
  6. Step 6: Final answer
    x = 1,295,358.17

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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.