Home / 678,753.46-1,018,261.14-257,996.44

Finding the Fourth Proportional to 678,753.46, 1,018,261.14 and 257,996.44

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Solution

The fourth proportional to 678,753.46, 1,018,261.14 and 257,996.44 is: 387,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,753.46 : 1,018,261.14 = 257,996.44 : x
  2. Step 2: Convert to fraction form
    678,753.46/1,018,261.14 = 257,996.44/x
  3. Step 3: Cross multiply
    678,753.46x = 1,018,261.14 × 257,996.44
  4. Step 4: Simplify right side
    678,753.46x = 262,707,749,110.34
  5. Step 5: Solve for x
    x = 262,707,749,110.34/678,753.46
  6. Step 6: Final answer
    x = 387,044.43

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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.