Home / 687,396.77-948,608.06-381,473.36

Finding the Fourth Proportional to 687,396.77, 948,608.06 and 381,473.36

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Solution

The fourth proportional to 687,396.77, 948,608.06 and 381,473.36 is: 526,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,396.77 : 948,608.06 = 381,473.36 : x
  2. Step 2: Convert to fraction form
    687,396.77/948,608.06 = 381,473.36/x
  3. Step 3: Cross multiply
    687,396.77x = 948,608.06 × 381,473.36
  4. Step 4: Simplify right side
    687,396.77x = 361,868,704,357.92
  5. Step 5: Solve for x
    x = 361,868,704,357.92/687,396.77
  6. Step 6: Final answer
    x = 526,433.53

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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.