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Finding the Fourth Proportional to 471,991.60, 707,987.40 and 451,514.80

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Solution

The fourth proportional to 471,991.60, 707,987.40 and 451,514.80 is: 677,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,991.60 : 707,987.40 = 451,514.80 : x
  2. Step 2: Convert to fraction form
    471,991.60/707,987.40 = 451,514.80/x
  3. Step 3: Cross multiply
    471,991.60x = 707,987.40 × 451,514.80
  4. Step 4: Simplify right side
    471,991.60x = 319,666,789,313.52
  5. Step 5: Solve for x
    x = 319,666,789,313.52/471,991.60
  6. Step 6: Final answer
    x = 677,272.20

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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.