Home / 1,128,375.90-1,557,158.70-644,951.42

Finding the Fourth Proportional to 1,128,375.90, 1,557,158.70 and 644,951.42

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Solution

The fourth proportional to 1,128,375.90, 1,557,158.70 and 644,951.42 is: 890,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,375.90 : 1,557,158.70 = 644,951.42 : x
  2. Step 2: Convert to fraction form
    1,128,375.90/1,557,158.70 = 644,951.42/x
  3. Step 3: Cross multiply
    1,128,375.90x = 1,557,158.70 × 644,951.42
  4. Step 4: Simplify right side
    1,128,375.90x = 1,004,291,714,730.35
  5. Step 5: Solve for x
    x = 1,004,291,714,730.35/1,128,375.90
  6. Step 6: Final answer
    x = 890,032.94

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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.