Home / 812,891.69-1,121,853.74-450,349.05

Finding the Fourth Proportional to 812,891.69, 1,121,853.74 and 450,349.05

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Solution

The fourth proportional to 812,891.69, 1,121,853.74 and 450,349.05 is: 621,516.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,891.69 : 1,121,853.74 = 450,349.05 : x
  2. Step 2: Convert to fraction form
    812,891.69/1,121,853.74 = 450,349.05/x
  3. Step 3: Cross multiply
    812,891.69x = 1,121,853.74 × 450,349.05
  4. Step 4: Simplify right side
    812,891.69x = 505,225,766,047.95
  5. Step 5: Solve for x
    x = 505,225,766,047.95/812,891.69
  6. Step 6: Final answer
    x = 621,516.71

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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.