Home / 1,128,393.46-1,557,288.44-644,864.17

Finding the Fourth Proportional to 1,128,393.46, 1,557,288.44 and 644,864.17

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Solution

The fourth proportional to 1,128,393.46, 1,557,288.44 and 644,864.17 is: 889,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,393.46 : 1,557,288.44 = 644,864.17 : x
  2. Step 2: Convert to fraction form
    1,128,393.46/1,557,288.44 = 644,864.17/x
  3. Step 3: Cross multiply
    1,128,393.46x = 1,557,288.44 × 644,864.17
  4. Step 4: Simplify right side
    1,128,393.46x = 1,004,239,517,311.19
  5. Step 5: Solve for x
    x = 1,004,239,517,311.19/1,128,393.46
  6. Step 6: Final answer
    x = 889,972.83

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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.