Home / 640,450.24-883,943.22-422,275.12

Finding the Fourth Proportional to 640,450.24, 883,943.22 and 422,275.12

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Solution

The fourth proportional to 640,450.24, 883,943.22 and 422,275.12 is: 582,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,450.24 : 883,943.22 = 422,275.12 : x
  2. Step 2: Convert to fraction form
    640,450.24/883,943.22 = 422,275.12/x
  3. Step 3: Cross multiply
    640,450.24x = 883,943.22 × 422,275.12
  4. Step 4: Simplify right side
    640,450.24x = 373,267,229,298.69
  5. Step 5: Solve for x
    x = 373,267,229,298.69/640,450.24
  6. Step 6: Final answer
    x = 582,820.03

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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.