Home / 771,109.40-1,064,144.25-422,280.52

Finding the Fourth Proportional to 771,109.40, 1,064,144.25 and 422,280.52

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Solution

The fourth proportional to 771,109.40, 1,064,144.25 and 422,280.52 is: 582,754.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,109.40 : 1,064,144.25 = 422,280.52 : x
  2. Step 2: Convert to fraction form
    771,109.40/1,064,144.25 = 422,280.52/x
  3. Step 3: Cross multiply
    771,109.40x = 1,064,144.25 × 422,280.52
  4. Step 4: Simplify right side
    771,109.40x = 449,367,384,584.65
  5. Step 5: Solve for x
    x = 449,367,384,584.65/771,109.40
  6. Step 6: Final answer
    x = 582,754.38

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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.