Home / 678,389.36-936,179.15-372,485.57

Finding the Fourth Proportional to 678,389.36, 936,179.15 and 372,485.57

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Solution

The fourth proportional to 678,389.36, 936,179.15 and 372,485.57 is: 514,031.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,389.36 : 936,179.15 = 372,485.57 : x
  2. Step 2: Convert to fraction form
    678,389.36/936,179.15 = 372,485.57/x
  3. Step 3: Cross multiply
    678,389.36x = 936,179.15 × 372,485.57
  4. Step 4: Simplify right side
    678,389.36x = 348,713,217,766.54
  5. Step 5: Solve for x
    x = 348,713,217,766.54/678,389.36
  6. Step 6: Final answer
    x = 514,031.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.