Home / 687,716.13-949,052.07-381,787.64

Finding the Fourth Proportional to 687,716.13, 949,052.07 and 381,787.64

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Solution

The fourth proportional to 687,716.13, 949,052.07 and 381,787.64 is: 526,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,716.13 : 949,052.07 = 381,787.64 : x
  2. Step 2: Convert to fraction form
    687,716.13/949,052.07 = 381,787.64/x
  3. Step 3: Cross multiply
    687,716.13x = 949,052.07 × 381,787.64
  4. Step 4: Simplify right side
    687,716.13x = 362,336,345,297.15
  5. Step 5: Solve for x
    x = 362,336,345,297.15/687,716.13
  6. Step 6: Final answer
    x = 526,869.05

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Double scale
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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.