Home / 1,293,139.80-1,939,709.70-394,579.80

Finding the Fourth Proportional to 1,293,139.80, 1,939,709.70 and 394,579.80

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Solution

The fourth proportional to 1,293,139.80, 1,939,709.70 and 394,579.80 is: 591,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,139.80 : 1,939,709.70 = 394,579.80 : x
  2. Step 2: Convert to fraction form
    1,293,139.80/1,939,709.70 = 394,579.80/x
  3. Step 3: Cross multiply
    1,293,139.80x = 1,939,709.70 × 394,579.80
  4. Step 4: Simplify right side
    1,293,139.80x = 765,370,265,484.06
  5. Step 5: Solve for x
    x = 765,370,265,484.06/1,293,139.80
  6. Step 6: Final answer
    x = 591,869.70

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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.