Home / 648,771.75-973,365.80-311,836.86

Finding the Fourth Proportional to 648,771.75, 973,365.80 and 311,836.86

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Solution

The fourth proportional to 648,771.75, 973,365.80 and 311,836.86 is: 467,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,771.75 : 973,365.80 = 311,836.86 : x
  2. Step 2: Convert to fraction form
    648,771.75/973,365.80 = 311,836.86/x
  3. Step 3: Cross multiply
    648,771.75x = 973,365.80 × 311,836.86
  4. Step 4: Simplify right side
    648,771.75x = 303,531,333,144.20
  5. Step 5: Solve for x
    x = 303,531,333,144.20/648,771.75
  6. Step 6: Final answer
    x = 467,855.35

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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.