Home / 678,772.88-1,018,143.51-341,722.97

Finding the Fourth Proportional to 678,772.88, 1,018,143.51 and 341,722.97

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Solution

The fourth proportional to 678,772.88, 1,018,143.51 and 341,722.97 is: 512,576.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,772.88 : 1,018,143.51 = 341,722.97 : x
  2. Step 2: Convert to fraction form
    678,772.88/1,018,143.51 = 341,722.97/x
  3. Step 3: Cross multiply
    678,772.88x = 1,018,143.51 × 341,722.97
  4. Step 4: Simplify right side
    678,772.88x = 347,923,019,032.71
  5. Step 5: Solve for x
    x = 347,923,019,032.71/678,772.88
  6. Step 6: Final answer
    x = 512,576.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.