Home / 678,833.70-1,018,250.55-205,542.60

Finding the Fourth Proportional to 678,833.70, 1,018,250.55 and 205,542.60

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Solution

The fourth proportional to 678,833.70, 1,018,250.55 and 205,542.60 is: 308,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,833.70 : 1,018,250.55 = 205,542.60 : x
  2. Step 2: Convert to fraction form
    678,833.70/1,018,250.55 = 205,542.60/x
  3. Step 3: Cross multiply
    678,833.70x = 1,018,250.55 × 205,542.60
  4. Step 4: Simplify right side
    678,833.70x = 209,293,865,498.43
  5. Step 5: Solve for x
    x = 209,293,865,498.43/678,833.70
  6. Step 6: Final answer
    x = 308,313.90

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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.