Home / 859,609.80-1,288,961.10-290,795.40

Finding the Fourth Proportional to 859,609.80, 1,288,961.10 and 290,795.40

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Solution

The fourth proportional to 859,609.80, 1,288,961.10 and 290,795.40 is: 436,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,609.80 : 1,288,961.10 = 290,795.40 : x
  2. Step 2: Convert to fraction form
    859,609.80/1,288,961.10 = 290,795.40/x
  3. Step 3: Cross multiply
    859,609.80x = 1,288,961.10 × 290,795.40
  4. Step 4: Simplify right side
    859,609.80x = 374,823,958,658.94
  5. Step 5: Solve for x
    x = 374,823,958,658.94/859,609.80
  6. Step 6: Final answer
    x = 436,039.65

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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.