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Finding the Fourth Proportional to 283,604.20, 396,521 and 283,604.20

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Solution

The fourth proportional to 283,604.20, 396,521 and 283,604.20 is: 396,521

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,604.20 : 396,521 = 283,604.20 : x
  2. Step 2: Convert to fraction form
    283,604.20/396,521 = 283,604.20/x
  3. Step 3: Cross multiply
    283,604.20x = 396,521 × 283,604.20
  4. Step 4: Simplify right side
    283,604.20x = 112,455,020,988.20
  5. Step 5: Solve for x
    x = 112,455,020,988.20/283,604.20
  6. Step 6: Final answer
    x = 396,521

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.