Home / 687,846.23-949,181.54-381,906.80

Finding the Fourth Proportional to 687,846.23, 949,181.54 and 381,906.80

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Solution

The fourth proportional to 687,846.23, 949,181.54 and 381,906.80 is: 527,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,846.23 : 949,181.54 = 381,906.80 : x
  2. Step 2: Convert to fraction form
    687,846.23/949,181.54 = 381,906.80/x
  3. Step 3: Cross multiply
    687,846.23x = 949,181.54 × 381,906.80
  4. Step 4: Simplify right side
    687,846.23x = 362,498,883,612.69
  5. Step 5: Solve for x
    x = 362,498,883,612.69/687,846.23
  6. Step 6: Final answer
    x = 527,005.70

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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.