Home / 813,069.86-1,121,998.59-445,544.82

Finding the Fourth Proportional to 813,069.86, 1,121,998.59 and 445,544.82

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Solution

The fourth proportional to 813,069.86, 1,121,998.59 and 445,544.82 is: 614,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,069.86 : 1,121,998.59 = 445,544.82 : x
  2. Step 2: Convert to fraction form
    813,069.86/1,121,998.59 = 445,544.82/x
  3. Step 3: Cross multiply
    813,069.86x = 1,121,998.59 × 445,544.82
  4. Step 4: Simplify right side
    813,069.86x = 499,900,659,821.80
  5. Step 5: Solve for x
    x = 499,900,659,821.80/813,069.86
  6. Step 6: Final answer
    x = 614,831.13

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Double scale
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Similar ratio
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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.