Home / 645,375.80-968,062.39-307,391.36

Finding the Fourth Proportional to 645,375.80, 968,062.39 and 307,391.36

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Solution

The fourth proportional to 645,375.80, 968,062.39 and 307,391.36 is: 461,086.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,375.80 : 968,062.39 = 307,391.36 : x
  2. Step 2: Convert to fraction form
    645,375.80/968,062.39 = 307,391.36/x
  3. Step 3: Cross multiply
    645,375.80x = 968,062.39 × 307,391.36
  4. Step 4: Simplify right side
    645,375.80x = 297,574,009,018.16
  5. Step 5: Solve for x
    x = 297,574,009,018.16/645,375.80
  6. Step 6: Final answer
    x = 461,086.41

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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.