Home / 869,828.29-1,200,422.97-487,879.67

Finding the Fourth Proportional to 869,828.29, 1,200,422.97 and 487,879.67

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Solution

The fourth proportional to 869,828.29, 1,200,422.97 and 487,879.67 is: 673,307.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,828.29 : 1,200,422.97 = 487,879.67 : x
  2. Step 2: Convert to fraction form
    869,828.29/1,200,422.97 = 487,879.67/x
  3. Step 3: Cross multiply
    869,828.29x = 1,200,422.97 × 487,879.67
  4. Step 4: Simplify right side
    869,828.29x = 585,661,965,465.08
  5. Step 5: Solve for x
    x = 585,661,965,465.08/869,828.29
  6. Step 6: Final answer
    x = 673,307.56

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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.