Home / 687,222.04-948,480.19-381,396.65

Finding the Fourth Proportional to 687,222.04, 948,480.19 and 381,396.65

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Solution

The fourth proportional to 687,222.04, 948,480.19 and 381,396.65 is: 526,390.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,222.04 : 948,480.19 = 381,396.65 : x
  2. Step 2: Convert to fraction form
    687,222.04/948,480.19 = 381,396.65/x
  3. Step 3: Cross multiply
    687,222.04x = 948,480.19 × 381,396.65
  4. Step 4: Simplify right side
    687,222.04x = 361,747,167,057.36
  5. Step 5: Solve for x
    x = 361,747,167,057.36/687,222.04
  6. Step 6: Final answer
    x = 526,390.52

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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.