Home / 1,128,283.32-1,557,168.72-644,868.84

Finding the Fourth Proportional to 1,128,283.32, 1,557,168.72 and 644,868.84

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Solution

The fourth proportional to 1,128,283.32, 1,557,168.72 and 644,868.84 is: 889,997.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,283.32 : 1,557,168.72 = 644,868.84 : x
  2. Step 2: Convert to fraction form
    1,128,283.32/1,557,168.72 = 644,868.84/x
  3. Step 3: Cross multiply
    1,128,283.32x = 1,557,168.72 × 644,868.84
  4. Step 4: Simplify right side
    1,128,283.32x = 1,004,169,586,150.68
  5. Step 5: Solve for x
    x = 1,004,169,586,150.68/1,128,283.32
  6. Step 6: Final answer
    x = 889,997.72

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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.