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Finding the Fourth Proportional to 476,387.88, 713,647.60 and 276,287.90

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Solution

The fourth proportional to 476,387.88, 713,647.60 and 276,287.90 is: 413,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,387.88 : 713,647.60 = 276,287.90 : x
  2. Step 2: Convert to fraction form
    476,387.88/713,647.60 = 276,287.90/x
  3. Step 3: Cross multiply
    476,387.88x = 713,647.60 × 276,287.90
  4. Step 4: Simplify right side
    476,387.88x = 197,172,196,744.04
  5. Step 5: Solve for x
    x = 197,172,196,744.04/476,387.88
  6. Step 6: Final answer
    x = 413,890.04

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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.