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Finding the Fourth Proportional to 670,728.47, 925,604.62 and 384,249.69

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Solution

The fourth proportional to 670,728.47, 925,604.62 and 384,249.69 is: 530,264.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,728.47 : 925,604.62 = 384,249.69 : x
  2. Step 2: Convert to fraction form
    670,728.47/925,604.62 = 384,249.69/x
  3. Step 3: Cross multiply
    670,728.47x = 925,604.62 × 384,249.69
  4. Step 4: Simplify right side
    670,728.47x = 355,663,287,336.94
  5. Step 5: Solve for x
    x = 355,663,287,336.94/670,728.47
  6. Step 6: Final answer
    x = 530,264.19

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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.