Home / 920,642.91-1,270,143.36-919,223.57

Finding the Fourth Proportional to 920,642.91, 1,270,143.36 and 919,223.57

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Solution

The fourth proportional to 920,642.91, 1,270,143.36 and 919,223.57 is: 1,268,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,642.91 : 1,270,143.36 = 919,223.57 : x
  2. Step 2: Convert to fraction form
    920,642.91/1,270,143.36 = 919,223.57/x
  3. Step 3: Cross multiply
    920,642.91x = 1,270,143.36 × 919,223.57
  4. Step 4: Simplify right side
    920,642.91x = 1,167,545,707,440.28
  5. Step 5: Solve for x
    x = 1,167,545,707,440.28/920,642.91
  6. Step 6: Final answer
    x = 1,268,185.19

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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.