Home / 979,764.36-1,469,739.50-380,771.80

Finding the Fourth Proportional to 979,764.36, 1,469,739.50 and 380,771.80

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Solution

The fourth proportional to 979,764.36, 1,469,739.50 and 380,771.80 is: 571,193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,764.36 : 1,469,739.50 = 380,771.80 : x
  2. Step 2: Convert to fraction form
    979,764.36/1,469,739.50 = 380,771.80/x
  3. Step 3: Cross multiply
    979,764.36x = 1,469,739.50 × 380,771.80
  4. Step 4: Simplify right side
    979,764.36x = 559,635,354,946.10
  5. Step 5: Solve for x
    x = 559,635,354,946.10/979,764.36
  6. Step 6: Final answer
    x = 571,193.83

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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.