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Finding the Fourth Proportional to 639,007.60, 957,697.35 and 339,631.60

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Solution

The fourth proportional to 639,007.60, 957,697.35 and 339,631.60 is: 509,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,007.60 : 957,697.35 = 339,631.60 : x
  2. Step 2: Convert to fraction form
    639,007.60/957,697.35 = 339,631.60/x
  3. Step 3: Cross multiply
    639,007.60x = 957,697.35 × 339,631.60
  4. Step 4: Simplify right side
    639,007.60x = 325,264,283,296.26
  5. Step 5: Solve for x
    x = 325,264,283,296.26/639,007.60
  6. Step 6: Final answer
    x = 509,014.73

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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.