Home / 678,866.45-1,018,720.17-394,690.73

Finding the Fourth Proportional to 678,866.45, 1,018,720.17 and 394,690.73

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Solution

The fourth proportional to 678,866.45, 1,018,720.17 and 394,690.73 is: 592,280.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,866.45 : 1,018,720.17 = 394,690.73 : x
  2. Step 2: Convert to fraction form
    678,866.45/1,018,720.17 = 394,690.73/x
  3. Step 3: Cross multiply
    678,866.45x = 1,018,720.17 × 394,690.73
  4. Step 4: Simplify right side
    678,866.45x = 402,079,402,469.42
  5. Step 5: Solve for x
    x = 402,079,402,469.42/678,866.45
  6. Step 6: Final answer
    x = 592,280.57

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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.