Home / 509,239.85-702,458.60-317,921.09

Finding the Fourth Proportional to 509,239.85, 702,458.60 and 317,921.09

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Solution

The fourth proportional to 509,239.85, 702,458.60 and 317,921.09 is: 438,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,239.85 : 702,458.60 = 317,921.09 : x
  2. Step 2: Convert to fraction form
    509,239.85/702,458.60 = 317,921.09/x
  3. Step 3: Cross multiply
    509,239.85x = 702,458.60 × 317,921.09
  4. Step 4: Simplify right side
    509,239.85x = 223,326,398,689.98
  5. Step 5: Solve for x
    x = 223,326,398,689.98/509,239.85
  6. Step 6: Final answer
    x = 438,548.56

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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.