Home / 812,410.88-1,121,036.45-449,743.91

Finding the Fourth Proportional to 812,410.88, 1,121,036.45 and 449,743.91

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Solution

The fourth proportional to 812,410.88, 1,121,036.45 and 449,743.91 is: 620,596.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,410.88 : 1,121,036.45 = 449,743.91 : x
  2. Step 2: Convert to fraction form
    812,410.88/1,121,036.45 = 449,743.91/x
  3. Step 3: Cross multiply
    812,410.88x = 1,121,036.45 × 449,743.91
  4. Step 4: Simplify right side
    812,410.88x = 504,179,308,421.62
  5. Step 5: Solve for x
    x = 504,179,308,421.62/812,410.88
  6. Step 6: Final answer
    x = 620,596.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.