Home / 1,383,268.20-1,908,906.33-771,421.62

Finding the Fourth Proportional to 1,383,268.20, 1,908,906.33 and 771,421.62

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Solution

The fourth proportional to 1,383,268.20, 1,908,906.33 and 771,421.62 is: 1,064,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,268.20 : 1,908,906.33 = 771,421.62 : x
  2. Step 2: Convert to fraction form
    1,383,268.20/1,908,906.33 = 771,421.62/x
  3. Step 3: Cross multiply
    1,383,268.20x = 1,908,906.33 × 771,421.62
  4. Step 4: Simplify right side
    1,383,268.20x = 1,472,571,613,516.85
  5. Step 5: Solve for x
    x = 1,472,571,613,516.85/1,383,268.20
  6. Step 6: Final answer
    x = 1,064,559.72

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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.