Home / 678,870.44-1,018,726.18-394,694.72

Finding the Fourth Proportional to 678,870.44, 1,018,726.18 and 394,694.72

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Solution

The fourth proportional to 678,870.44, 1,018,726.18 and 394,694.72 is: 592,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,870.44 : 1,018,726.18 = 394,694.72 : x
  2. Step 2: Convert to fraction form
    678,870.44/1,018,726.18 = 394,694.72/x
  3. Step 3: Cross multiply
    678,870.44x = 1,018,726.18 × 394,694.72
  4. Step 4: Simplify right side
    678,870.44x = 402,085,844,371.77
  5. Step 5: Solve for x
    x = 402,085,844,371.77/678,870.44
  6. Step 6: Final answer
    x = 592,286.57

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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.