Home / 1,128,381.92-1,557,166.96-644,957.44

Finding the Fourth Proportional to 1,128,381.92, 1,557,166.96 and 644,957.44

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Solution

The fourth proportional to 1,128,381.92, 1,557,166.96 and 644,957.44 is: 890,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,381.92 : 1,557,166.96 = 644,957.44 : x
  2. Step 2: Convert to fraction form
    1,128,381.92/1,557,166.96 = 644,957.44/x
  3. Step 3: Cross multiply
    1,128,381.92x = 1,557,166.96 × 644,957.44
  4. Step 4: Simplify right side
    1,128,381.92x = 1,004,306,416,174.18
  5. Step 5: Solve for x
    x = 1,004,306,416,174.18/1,128,381.92
  6. Step 6: Final answer
    x = 890,041.22

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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.