Home / 1,222,504.47-1,687,062.65-763,885.18

Finding the Fourth Proportional to 1,222,504.47, 1,687,062.65 and 763,885.18

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Solution

The fourth proportional to 1,222,504.47, 1,687,062.65 and 763,885.18 is: 1,054,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,504.47 : 1,687,062.65 = 763,885.18 : x
  2. Step 2: Convert to fraction form
    1,222,504.47/1,687,062.65 = 763,885.18/x
  3. Step 3: Cross multiply
    1,222,504.47x = 1,687,062.65 × 763,885.18
  4. Step 4: Simplify right side
    1,222,504.47x = 1,288,722,163,185.17
  5. Step 5: Solve for x
    x = 1,288,722,163,185.17/1,222,504.47
  6. Step 6: Final answer
    x = 1,054,165.61

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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.