Home / 979,960.87-1,469,369.10-380,221.57

Finding the Fourth Proportional to 979,960.87, 1,469,369.10 and 380,221.57

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Solution

The fourth proportional to 979,960.87, 1,469,369.10 and 380,221.57 is: 570,110.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,960.87 : 1,469,369.10 = 380,221.57 : x
  2. Step 2: Convert to fraction form
    979,960.87/1,469,369.10 = 380,221.57/x
  3. Step 3: Cross multiply
    979,960.87x = 1,469,369.10 × 380,221.57
  4. Step 4: Simplify right side
    979,960.87x = 558,685,822,567.98
  5. Step 5: Solve for x
    x = 558,685,822,567.98/979,960.87
  6. Step 6: Final answer
    x = 570,110.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.