Home / 678,929.94-1,016,937.05-639,182.57

Finding the Fourth Proportional to 678,929.94, 1,016,937.05 and 639,182.57

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Solution

The fourth proportional to 678,929.94, 1,016,937.05 and 639,182.57 is: 957,401.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,929.94 : 1,016,937.05 = 639,182.57 : x
  2. Step 2: Convert to fraction form
    678,929.94/1,016,937.05 = 639,182.57/x
  3. Step 3: Cross multiply
    678,929.94x = 1,016,937.05 × 639,182.57
  4. Step 4: Simplify right side
    678,929.94x = 650,008,428,866.62
  5. Step 5: Solve for x
    x = 650,008,428,866.62/678,929.94
  6. Step 6: Final answer
    x = 957,401.33

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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.