Home / 853,569.66-1,279,250.73-638,651.35

Finding the Fourth Proportional to 853,569.66, 1,279,250.73 and 638,651.35

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Solution

The fourth proportional to 853,569.66, 1,279,250.73 and 638,651.35 is: 957,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,569.66 : 1,279,250.73 = 638,651.35 : x
  2. Step 2: Convert to fraction form
    853,569.66/1,279,250.73 = 638,651.35/x
  3. Step 3: Cross multiply
    853,569.66x = 1,279,250.73 × 638,651.35
  4. Step 4: Simplify right side
    853,569.66x = 816,995,207,302.05
  5. Step 5: Solve for x
    x = 816,995,207,302.05/853,569.66
  6. Step 6: Final answer
    x = 957,151.18

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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.