Home / 690,841.90-1,036,408.65-217,575.10

Finding the Fourth Proportional to 690,841.90, 1,036,408.65 and 217,575.10

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Solution

The fourth proportional to 690,841.90, 1,036,408.65 and 217,575.10 is: 326,408.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,841.90 : 1,036,408.65 = 217,575.10 : x
  2. Step 2: Convert to fraction form
    690,841.90/1,036,408.65 = 217,575.10/x
  3. Step 3: Cross multiply
    690,841.90x = 1,036,408.65 × 217,575.10
  4. Step 4: Simplify right side
    690,841.90x = 225,496,715,664.62
  5. Step 5: Solve for x
    x = 225,496,715,664.62/690,841.90
  6. Step 6: Final answer
    x = 326,408.57

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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.