Home / 769,751.25-1,062,223.31-420,885.27

Finding the Fourth Proportional to 769,751.25, 1,062,223.31 and 420,885.27

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Solution

The fourth proportional to 769,751.25, 1,062,223.31 and 420,885.27 is: 580,803.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,751.25 : 1,062,223.31 = 420,885.27 : x
  2. Step 2: Convert to fraction form
    769,751.25/1,062,223.31 = 420,885.27/x
  3. Step 3: Cross multiply
    769,751.25x = 1,062,223.31 × 420,885.27
  4. Step 4: Simplify right side
    769,751.25x = 447,074,142,525.22
  5. Step 5: Solve for x
    x = 447,074,142,525.22/769,751.25
  6. Step 6: Final answer
    x = 580,803.40

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1.5x scale

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.