Home / 687,596.37-948,835.42-381,648.66

Finding the Fourth Proportional to 687,596.37, 948,835.42 and 381,648.66

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Solution

The fourth proportional to 687,596.37, 948,835.42 and 381,648.66 is: 526,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,596.37 : 948,835.42 = 381,648.66 : x
  2. Step 2: Convert to fraction form
    687,596.37/948,835.42 = 381,648.66/x
  3. Step 3: Cross multiply
    687,596.37x = 948,835.42 × 381,648.66
  4. Step 4: Simplify right side
    687,596.37x = 362,121,766,603.54
  5. Step 5: Solve for x
    x = 362,121,766,603.54/687,596.37
  6. Step 6: Final answer
    x = 526,648.75

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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.