Home / 777,725.50-1,073,261.20-420,029.50

Finding the Fourth Proportional to 777,725.50, 1,073,261.20 and 420,029.50

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Solution

The fourth proportional to 777,725.50, 1,073,261.20 and 420,029.50 is: 579,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,725.50 : 1,073,261.20 = 420,029.50 : x
  2. Step 2: Convert to fraction form
    777,725.50/1,073,261.20 = 420,029.50/x
  3. Step 3: Cross multiply
    777,725.50x = 1,073,261.20 × 420,029.50
  4. Step 4: Simplify right side
    777,725.50x = 450,801,365,205.40
  5. Step 5: Solve for x
    x = 450,801,365,205.40/777,725.50
  6. Step 6: Final answer
    x = 579,640.72

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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.