Home / 1,368,138.32-1,887,940.90-787,267.69

Finding the Fourth Proportional to 1,368,138.32, 1,887,940.90 and 787,267.69

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Solution

The fourth proportional to 1,368,138.32, 1,887,940.90 and 787,267.69 is: 1,086,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,138.32 : 1,887,940.90 = 787,267.69 : x
  2. Step 2: Convert to fraction form
    1,368,138.32/1,887,940.90 = 787,267.69/x
  3. Step 3: Cross multiply
    1,368,138.32x = 1,887,940.90 × 787,267.69
  4. Step 4: Simplify right side
    1,368,138.32x = 1,486,314,871,199.52
  5. Step 5: Solve for x
    x = 1,486,314,871,199.52/1,368,138.32
  6. Step 6: Final answer
    x = 1,086,377.63

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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.