Home / 812,112.61-1,120,701.82-449,528.69

Finding the Fourth Proportional to 812,112.61, 1,120,701.82 and 449,528.69

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Solution

The fourth proportional to 812,112.61, 1,120,701.82 and 449,528.69 is: 620,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,112.61 : 1,120,701.82 = 449,528.69 : x
  2. Step 2: Convert to fraction form
    812,112.61/1,120,701.82 = 449,528.69/x
  3. Step 3: Cross multiply
    812,112.61x = 1,120,701.82 × 449,528.69
  4. Step 4: Simplify right side
    812,112.61x = 503,787,621,025.22
  5. Step 5: Solve for x
    x = 503,787,621,025.22/812,112.61
  6. Step 6: Final answer
    x = 620,342.07

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Double scale
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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.