Home / 1,431,516.42-1,975,453.65-786,936.78

Finding the Fourth Proportional to 1,431,516.42, 1,975,453.65 and 786,936.78

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Solution

The fourth proportional to 1,431,516.42, 1,975,453.65 and 786,936.78 is: 1,085,951.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,516.42 : 1,975,453.65 = 786,936.78 : x
  2. Step 2: Convert to fraction form
    1,431,516.42/1,975,453.65 = 786,936.78/x
  3. Step 3: Cross multiply
    1,431,516.42x = 1,975,453.65 × 786,936.78
  4. Step 4: Simplify right side
    1,431,516.42x = 1,554,557,134,370.25
  5. Step 5: Solve for x
    x = 1,554,557,134,370.25/1,431,516.42
  6. Step 6: Final answer
    x = 1,085,951.31

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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.