Home / 1,128,379.92-1,557,164.20-644,955.44

Finding the Fourth Proportional to 1,128,379.92, 1,557,164.20 and 644,955.44

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Solution

The fourth proportional to 1,128,379.92, 1,557,164.20 and 644,955.44 is: 890,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,379.92 : 1,557,164.20 = 644,955.44 : x
  2. Step 2: Convert to fraction form
    1,128,379.92/1,557,164.20 = 644,955.44/x
  3. Step 3: Cross multiply
    1,128,379.92x = 1,557,164.20 × 644,955.44
  4. Step 4: Simplify right side
    1,128,379.92x = 1,004,301,521,763.25
  5. Step 5: Solve for x
    x = 1,004,301,521,763.25/1,128,379.92
  6. Step 6: Final answer
    x = 890,038.46

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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.