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Finding the Fourth Proportional to 670,758.70, 925,646.33 and 384,279.92

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Solution

The fourth proportional to 670,758.70, 925,646.33 and 384,279.92 is: 530,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,758.70 : 925,646.33 = 384,279.92 : x
  2. Step 2: Convert to fraction form
    670,758.70/925,646.33 = 384,279.92/x
  3. Step 3: Cross multiply
    670,758.70x = 925,646.33 × 384,279.92
  4. Step 4: Simplify right side
    670,758.70x = 355,707,297,640.69
  5. Step 5: Solve for x
    x = 355,707,297,640.69/670,758.70
  6. Step 6: Final answer
    x = 530,305.90

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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.