Home / 1,187,299.43-1,781,138.29-429,064.14

Finding the Fourth Proportional to 1,187,299.43, 1,781,138.29 and 429,064.14

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Solution

The fourth proportional to 1,187,299.43, 1,781,138.29 and 429,064.14 is: 643,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,299.43 : 1,781,138.29 = 429,064.14 : x
  2. Step 2: Convert to fraction form
    1,187,299.43/1,781,138.29 = 429,064.14/x
  3. Step 3: Cross multiply
    1,187,299.43x = 1,781,138.29 × 429,064.14
  4. Step 4: Simplify right side
    1,187,299.43x = 764,222,568,619.92
  5. Step 5: Solve for x
    x = 764,222,568,619.92/1,187,299.43
  6. Step 6: Final answer
    x = 643,664.56

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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.