Home / 811,673.58-1,120,142.58-449,091.56

Finding the Fourth Proportional to 811,673.58, 1,120,142.58 and 449,091.56

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Solution

The fourth proportional to 811,673.58, 1,120,142.58 and 449,091.56 is: 619,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,673.58 : 1,120,142.58 = 449,091.56 : x
  2. Step 2: Convert to fraction form
    811,673.58/1,120,142.58 = 449,091.56/x
  3. Step 3: Cross multiply
    811,673.58x = 1,120,142.58 × 449,091.56
  4. Step 4: Simplify right side
    811,673.58x = 503,046,578,674.63
  5. Step 5: Solve for x
    x = 503,046,578,674.63/811,673.58
  6. Step 6: Final answer
    x = 619,764.63

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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.