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Finding the Fourth Proportional to 849,996, 1,275,212.88 and 317,520.72

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Solution

The fourth proportional to 849,996, 1,275,212.88 and 317,520.72 is: 476,362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,996 : 1,275,212.88 = 317,520.72 : x
  2. Step 2: Convert to fraction form
    849,996/1,275,212.88 = 317,520.72/x
  3. Step 3: Cross multiply
    849,996x = 1,275,212.88 × 317,520.72
  4. Step 4: Simplify right side
    849,996x = 404,906,511,810.87
  5. Step 5: Solve for x
    x = 404,906,511,810.87/849,996
  6. Step 6: Final answer
    x = 476,362.84

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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.