Home / 687,226.37-1,030,425.39-308,078.49

Finding the Fourth Proportional to 687,226.37, 1,030,425.39 and 308,078.49

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Solution

The fourth proportional to 687,226.37, 1,030,425.39 and 308,078.49 is: 461,932.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,226.37 : 1,030,425.39 = 308,078.49 : x
  2. Step 2: Convert to fraction form
    687,226.37/1,030,425.39 = 308,078.49/x
  3. Step 3: Cross multiply
    687,226.37x = 1,030,425.39 × 308,078.49
  4. Step 4: Simplify right side
    687,226.37x = 317,451,898,208.86
  5. Step 5: Solve for x
    x = 317,451,898,208.86/687,226.37
  6. Step 6: Final answer
    x = 461,932.07

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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.