Home / 778,982.67-1,074,999.24-421,286.67

Finding the Fourth Proportional to 778,982.67, 1,074,999.24 and 421,286.67

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Solution

The fourth proportional to 778,982.67, 1,074,999.24 and 421,286.67 is: 581,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,982.67 : 1,074,999.24 = 421,286.67 : x
  2. Step 2: Convert to fraction form
    778,982.67/1,074,999.24 = 421,286.67/x
  3. Step 3: Cross multiply
    778,982.67x = 1,074,999.24 × 421,286.67
  4. Step 4: Simplify right side
    778,982.67x = 452,882,850,072.13
  5. Step 5: Solve for x
    x = 452,882,850,072.13/778,982.67
  6. Step 6: Final answer
    x = 581,377.31

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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.