Home / 691,121.45-1,036,682.18-292,212.65

Finding the Fourth Proportional to 691,121.45, 1,036,682.18 and 292,212.65

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Solution

The fourth proportional to 691,121.45, 1,036,682.18 and 292,212.65 is: 438,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,121.45 : 1,036,682.18 = 292,212.65 : x
  2. Step 2: Convert to fraction form
    691,121.45/1,036,682.18 = 292,212.65/x
  3. Step 3: Cross multiply
    691,121.45x = 1,036,682.18 × 292,212.65
  4. Step 4: Simplify right side
    691,121.45x = 302,931,647,025.58
  5. Step 5: Solve for x
    x = 302,931,647,025.58/691,121.45
  6. Step 6: Final answer
    x = 438,318.98

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.