Home / 678,403.76-1,017,753.26-205,076.81

Finding the Fourth Proportional to 678,403.76, 1,017,753.26 and 205,076.81

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Solution

The fourth proportional to 678,403.76, 1,017,753.26 and 205,076.81 is: 307,659.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,403.76 : 1,017,753.26 = 205,076.81 : x
  2. Step 2: Convert to fraction form
    678,403.76/1,017,753.26 = 205,076.81/x
  3. Step 3: Cross multiply
    678,403.76x = 1,017,753.26 × 205,076.81
  4. Step 4: Simplify right side
    678,403.76x = 208,717,593,446.90
  5. Step 5: Solve for x
    x = 208,717,593,446.90/678,403.76
  6. Step 6: Final answer
    x = 307,659.84

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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.