Home / 1,407,385.45-1,942,371.80-787,225.09

Finding the Fourth Proportional to 1,407,385.45, 1,942,371.80 and 787,225.09

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Solution

The fourth proportional to 1,407,385.45, 1,942,371.80 and 787,225.09 is: 1,086,471.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,385.45 : 1,942,371.80 = 787,225.09 : x
  2. Step 2: Convert to fraction form
    1,407,385.45/1,942,371.80 = 787,225.09/x
  3. Step 3: Cross multiply
    1,407,385.45x = 1,942,371.80 × 787,225.09
  4. Step 4: Simplify right side
    1,407,385.45x = 1,529,083,801,420.48
  5. Step 5: Solve for x
    x = 1,529,083,801,420.48/1,407,385.45
  6. Step 6: Final answer
    x = 1,086,471.23

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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.