Home / 1,211,775.80-1,672,241.36-667,912.64

Finding the Fourth Proportional to 1,211,775.80, 1,672,241.36 and 667,912.64

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Solution

The fourth proportional to 1,211,775.80, 1,672,241.36 and 667,912.64 is: 921,714.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,775.80 : 1,672,241.36 = 667,912.64 : x
  2. Step 2: Convert to fraction form
    1,211,775.80/1,672,241.36 = 667,912.64/x
  3. Step 3: Cross multiply
    1,211,775.80x = 1,672,241.36 × 667,912.64
  4. Step 4: Simplify right side
    1,211,775.80x = 1,116,911,129,774.02
  5. Step 5: Solve for x
    x = 1,116,911,129,774.02/1,211,775.80
  6. Step 6: Final answer
    x = 921,714.34

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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.