Home / 687,162.54-948,329.15-396,786.35

Finding the Fourth Proportional to 687,162.54, 948,329.15 and 396,786.35

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Solution

The fourth proportional to 687,162.54, 948,329.15 and 396,786.35 is: 547,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,162.54 : 948,329.15 = 396,786.35 : x
  2. Step 2: Convert to fraction form
    687,162.54/948,329.15 = 396,786.35/x
  3. Step 3: Cross multiply
    687,162.54x = 948,329.15 × 396,786.35
  4. Step 4: Simplify right side
    687,162.54x = 376,284,059,311.57
  5. Step 5: Solve for x
    x = 376,284,059,311.57/687,162.54
  6. Step 6: Final answer
    x = 547,591.06

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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.