Home / 853,571.92-1,279,254.10-638,653.60

Finding the Fourth Proportional to 853,571.92, 1,279,254.10 and 638,653.60

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Solution

The fourth proportional to 853,571.92, 1,279,254.10 and 638,653.60 is: 957,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,571.92 : 1,279,254.10 = 638,653.60 : x
  2. Step 2: Convert to fraction form
    853,571.92/1,279,254.10 = 638,653.60/x
  3. Step 3: Cross multiply
    853,571.92x = 1,279,254.10 × 638,653.60
  4. Step 4: Simplify right side
    853,571.92x = 817,000,236,279.76
  5. Step 5: Solve for x
    x = 817,000,236,279.76/853,571.92
  6. Step 6: Final answer
    x = 957,154.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.