Home / 691,719.51-954,410.40-419,781.33

Finding the Fourth Proportional to 691,719.51, 954,410.40 and 419,781.33

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Solution

The fourth proportional to 691,719.51, 954,410.40 and 419,781.33 is: 579,199.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,719.51 : 954,410.40 = 419,781.33 : x
  2. Step 2: Convert to fraction form
    691,719.51/954,410.40 = 419,781.33/x
  3. Step 3: Cross multiply
    691,719.51x = 954,410.40 × 419,781.33
  4. Step 4: Simplify right side
    691,719.51x = 400,643,667,077.83
  5. Step 5: Solve for x
    x = 400,643,667,077.83/691,719.51
  6. Step 6: Final answer
    x = 579,199.61

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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.