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Finding the Fourth Proportional to 637,682.36, 879,990.84 and 351,229.16

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Solution

The fourth proportional to 637,682.36, 879,990.84 and 351,229.16 is: 484,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,682.36 : 879,990.84 = 351,229.16 : x
  2. Step 2: Convert to fraction form
    637,682.36/879,990.84 = 351,229.16/x
  3. Step 3: Cross multiply
    637,682.36x = 879,990.84 × 351,229.16
  4. Step 4: Simplify right side
    637,682.36x = 309,078,443,540.89
  5. Step 5: Solve for x
    x = 309,078,443,540.89/637,682.36
  6. Step 6: Final answer
    x = 484,690.28

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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.