Home / 1,185,325-1,635,748.38-641,460.78

Finding the Fourth Proportional to 1,185,325, 1,635,748.38 and 641,460.78

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Solution

The fourth proportional to 1,185,325, 1,635,748.38 and 641,460.78 is: 885,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,325 : 1,635,748.38 = 641,460.78 : x
  2. Step 2: Convert to fraction form
    1,185,325/1,635,748.38 = 641,460.78/x
  3. Step 3: Cross multiply
    1,185,325x = 1,635,748.38 × 641,460.78
  4. Step 4: Simplify right side
    1,185,325x = 1,049,268,431,718.54
  5. Step 5: Solve for x
    x = 1,049,268,431,718.54/1,185,325
  6. Step 6: Final answer
    x = 885,215.81

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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.