Home / 1,431,768.78-1,975,879.04-787,205.61

Finding the Fourth Proportional to 1,431,768.78, 1,975,879.04 and 787,205.61

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Solution

The fourth proportional to 1,431,768.78, 1,975,879.04 and 787,205.61 is: 1,086,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,768.78 : 1,975,879.04 = 787,205.61 : x
  2. Step 2: Convert to fraction form
    1,431,768.78/1,975,879.04 = 787,205.61/x
  3. Step 3: Cross multiply
    1,431,768.78x = 1,975,879.04 × 787,205.61
  4. Step 4: Simplify right side
    1,431,768.78x = 1,555,423,061,033.39
  5. Step 5: Solve for x
    x = 1,555,423,061,033.39/1,431,768.78
  6. Step 6: Final answer
    x = 1,086,364.70

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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.