Home / 499,646.06-689,736.72-318,601.34

Finding the Fourth Proportional to 499,646.06, 689,736.72 and 318,601.34

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Solution

The fourth proportional to 499,646.06, 689,736.72 and 318,601.34 is: 439,813.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,646.06 : 689,736.72 = 318,601.34 : x
  2. Step 2: Convert to fraction form
    499,646.06/689,736.72 = 318,601.34/x
  3. Step 3: Cross multiply
    499,646.06x = 689,736.72 × 318,601.34
  4. Step 4: Simplify right side
    499,646.06x = 219,751,043,239.21
  5. Step 5: Solve for x
    x = 219,751,043,239.21/499,646.06
  6. Step 6: Final answer
    x = 439,813.42

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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.