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Finding the Fourth Proportional to 872,244.40, 1,308,107.40 and 339,458.80

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Solution

The fourth proportional to 872,244.40, 1,308,107.40 and 339,458.80 is: 509,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,244.40 : 1,308,107.40 = 339,458.80 : x
  2. Step 2: Convert to fraction form
    872,244.40/1,308,107.40 = 339,458.80/x
  3. Step 3: Cross multiply
    872,244.40x = 1,308,107.40 × 339,458.80
  4. Step 4: Simplify right side
    872,244.40x = 444,048,568,275.12
  5. Step 5: Solve for x
    x = 444,048,568,275.12/872,244.40
  6. Step 6: Final answer
    x = 509,087.32

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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.