Home / 1,270,891.47-1,753,391.79-812,274.51

Finding the Fourth Proportional to 1,270,891.47, 1,753,391.79 and 812,274.51

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Solution

The fourth proportional to 1,270,891.47, 1,753,391.79 and 812,274.51 is: 1,120,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,891.47 : 1,753,391.79 = 812,274.51 : x
  2. Step 2: Convert to fraction form
    1,270,891.47/1,753,391.79 = 812,274.51/x
  3. Step 3: Cross multiply
    1,270,891.47x = 1,753,391.79 × 812,274.51
  4. Step 4: Simplify right side
    1,270,891.47x = 1,424,235,457,060.27
  5. Step 5: Solve for x
    x = 1,424,235,457,060.27/1,270,891.47
  6. Step 6: Final answer
    x = 1,120,658.60

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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.