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Finding the Fourth Proportional to 670,758.20, 925,645.64 and 384,279.42

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Solution

The fourth proportional to 670,758.20, 925,645.64 and 384,279.42 is: 530,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,758.20 : 925,645.64 = 384,279.42 : x
  2. Step 2: Convert to fraction form
    670,758.20/925,645.64 = 384,279.42/x
  3. Step 3: Cross multiply
    670,758.20x = 925,645.64 × 384,279.42
  4. Step 4: Simplify right side
    670,758.20x = 355,706,569,664.73
  5. Step 5: Solve for x
    x = 355,706,569,664.73/670,758.20
  6. Step 6: Final answer
    x = 530,305.21

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1.5x scale

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.