Home / 639,504.72-959,837.99-340,235.64

Finding the Fourth Proportional to 639,504.72, 959,837.99 and 340,235.64

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Solution

The fourth proportional to 639,504.72, 959,837.99 and 340,235.64 is: 510,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,504.72 : 959,837.99 = 340,235.64 : x
  2. Step 2: Convert to fraction form
    639,504.72/959,837.99 = 340,235.64/x
  3. Step 3: Cross multiply
    639,504.72x = 959,837.99 × 340,235.64
  4. Step 4: Simplify right side
    639,504.72x = 326,571,091,122.79
  5. Step 5: Solve for x
    x = 326,571,091,122.79/639,504.72
  6. Step 6: Final answer
    x = 510,662.52

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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.