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Finding the Fourth Proportional to 670,665.12, 925,440.24 and 384,168.12

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Solution

The fourth proportional to 670,665.12, 925,440.24 and 384,168.12 is: 530,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,665.12 : 925,440.24 = 384,168.12 : x
  2. Step 2: Convert to fraction form
    670,665.12/925,440.24 = 384,168.12/x
  3. Step 3: Cross multiply
    670,665.12x = 925,440.24 × 384,168.12
  4. Step 4: Simplify right side
    670,665.12x = 355,524,637,173.15
  5. Step 5: Solve for x
    x = 355,524,637,173.15/670,665.12
  6. Step 6: Final answer
    x = 530,107.54

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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.