Home / 813,025.22-1,121,983.81-450,454.78

Finding the Fourth Proportional to 813,025.22, 1,121,983.81 and 450,454.78

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Solution

The fourth proportional to 813,025.22, 1,121,983.81 and 450,454.78 is: 621,632.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,025.22 : 1,121,983.81 = 450,454.78 : x
  2. Step 2: Convert to fraction form
    813,025.22/1,121,983.81 = 450,454.78/x
  3. Step 3: Cross multiply
    813,025.22x = 1,121,983.81 × 450,454.78
  4. Step 4: Simplify right side
    813,025.22x = 505,402,970,573.46
  5. Step 5: Solve for x
    x = 505,402,970,573.46/813,025.22
  6. Step 6: Final answer
    x = 621,632.59

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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.