Home / 678,867.45-1,018,721.67-394,691.73

Finding the Fourth Proportional to 678,867.45, 1,018,721.67 and 394,691.73

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Solution

The fourth proportional to 678,867.45, 1,018,721.67 and 394,691.73 is: 592,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,867.45 : 1,018,721.67 = 394,691.73 : x
  2. Step 2: Convert to fraction form
    678,867.45/1,018,721.67 = 394,691.73/x
  3. Step 3: Cross multiply
    678,867.45x = 1,018,721.67 × 394,691.73
  4. Step 4: Simplify right side
    678,867.45x = 402,081,018,320.79
  5. Step 5: Solve for x
    x = 402,081,018,320.79/678,867.45
  6. Step 6: Final answer
    x = 592,282.07

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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.