Home / 812,313.12-1,120,955.52-449,711.52

Finding the Fourth Proportional to 812,313.12, 1,120,955.52 and 449,711.52

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Solution

The fourth proportional to 812,313.12, 1,120,955.52 and 449,711.52 is: 620,581.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,313.12 : 1,120,955.52 = 449,711.52 : x
  2. Step 2: Convert to fraction form
    812,313.12/1,120,955.52 = 449,711.52/x
  3. Step 3: Cross multiply
    812,313.12x = 1,120,955.52 × 449,711.52
  4. Step 4: Simplify right side
    812,313.12x = 504,106,610,751.59
  5. Step 5: Solve for x
    x = 504,106,610,751.59/812,313.12
  6. Step 6: Final answer
    x = 620,581.64

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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.