Home / 1,128,366.81-1,557,146.20-644,942.33

Finding the Fourth Proportional to 1,128,366.81, 1,557,146.20 and 644,942.33

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Solution

The fourth proportional to 1,128,366.81, 1,557,146.20 and 644,942.33 is: 890,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,366.81 : 1,557,146.20 = 644,942.33 : x
  2. Step 2: Convert to fraction form
    1,128,366.81/1,557,146.20 = 644,942.33/x
  3. Step 3: Cross multiply
    1,128,366.81x = 1,557,146.20 × 644,942.33
  4. Step 4: Simplify right side
    1,128,366.81x = 1,004,269,500,659.16
  5. Step 5: Solve for x
    x = 1,004,269,500,659.16/1,128,366.81
  6. Step 6: Final answer
    x = 890,020.42

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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.