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Finding the Fourth Proportional to 673,805.70, 1,010,708.55 and 200,429.55

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Solution

The fourth proportional to 673,805.70, 1,010,708.55 and 200,429.55 is: 300,644.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,805.70 : 1,010,708.55 = 200,429.55 : x
  2. Step 2: Convert to fraction form
    673,805.70/1,010,708.55 = 200,429.55/x
  3. Step 3: Cross multiply
    673,805.70x = 1,010,708.55 × 200,429.55
  4. Step 4: Simplify right side
    673,805.70x = 202,575,859,857.65
  5. Step 5: Solve for x
    x = 202,575,859,857.65/673,805.70
  6. Step 6: Final answer
    x = 300,644.33

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Similar ratio
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1.5x scale

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.