Home / 1,375,012.20-1,897,865.64-939,605.82

Finding the Fourth Proportional to 1,375,012.20, 1,897,865.64 and 939,605.82

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Solution

The fourth proportional to 1,375,012.20, 1,897,865.64 and 939,605.82 is: 1,296,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,012.20 : 1,897,865.64 = 939,605.82 : x
  2. Step 2: Convert to fraction form
    1,375,012.20/1,897,865.64 = 939,605.82/x
  3. Step 3: Cross multiply
    1,375,012.20x = 1,897,865.64 × 939,605.82
  4. Step 4: Simplify right side
    1,375,012.20x = 1,783,245,600,922.02
  5. Step 5: Solve for x
    x = 1,783,245,600,922.02/1,375,012.20
  6. Step 6: Final answer
    x = 1,296,894.38

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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.