Home / 690,514.72-1,035,893.52-285,705.76

Finding the Fourth Proportional to 690,514.72, 1,035,893.52 and 285,705.76

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Solution

The fourth proportional to 690,514.72, 1,035,893.52 and 285,705.76 is: 428,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,514.72 : 1,035,893.52 = 285,705.76 : x
  2. Step 2: Convert to fraction form
    690,514.72/1,035,893.52 = 285,705.76/x
  3. Step 3: Cross multiply
    690,514.72x = 1,035,893.52 × 285,705.76
  4. Step 4: Simplify right side
    690,514.72x = 295,960,745,410.68
  5. Step 5: Solve for x
    x = 295,960,745,410.68/690,514.72
  6. Step 6: Final answer
    x = 428,608.89

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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.