Home / 645,673.27-890,788.43-403,863.97

Finding the Fourth Proportional to 645,673.27, 890,788.43 and 403,863.97

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Solution

The fourth proportional to 645,673.27, 890,788.43 and 403,863.97 is: 557,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,673.27 : 890,788.43 = 403,863.97 : x
  2. Step 2: Convert to fraction form
    645,673.27/890,788.43 = 403,863.97/x
  3. Step 3: Cross multiply
    645,673.27x = 890,788.43 × 403,863.97
  4. Step 4: Simplify right side
    645,673.27x = 359,757,347,315.93
  5. Step 5: Solve for x
    x = 359,757,347,315.93/645,673.27
  6. Step 6: Final answer
    x = 557,181.73

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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.