Home / 687,616.32-948,895.52-381,674.72

Finding the Fourth Proportional to 687,616.32, 948,895.52 and 381,674.72

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Solution

The fourth proportional to 687,616.32, 948,895.52 and 381,674.72 is: 526,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,616.32 : 948,895.52 = 381,674.72 : x
  2. Step 2: Convert to fraction form
    687,616.32/948,895.52 = 381,674.72/x
  3. Step 3: Cross multiply
    687,616.32x = 948,895.52 × 381,674.72
  4. Step 4: Simplify right side
    687,616.32x = 362,169,431,905.25
  5. Step 5: Solve for x
    x = 362,169,431,905.25/687,616.32
  6. Step 6: Final answer
    x = 526,702.79

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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.