Home / 780,022.90-1,170,034.35-380,919.70

Finding the Fourth Proportional to 780,022.90, 1,170,034.35 and 380,919.70

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Solution

The fourth proportional to 780,022.90, 1,170,034.35 and 380,919.70 is: 571,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,022.90 : 1,170,034.35 = 380,919.70 : x
  2. Step 2: Convert to fraction form
    780,022.90/1,170,034.35 = 380,919.70/x
  3. Step 3: Cross multiply
    780,022.90x = 1,170,034.35 × 380,919.70
  4. Step 4: Simplify right side
    780,022.90x = 445,689,133,591.70
  5. Step 5: Solve for x
    x = 445,689,133,591.70/780,022.90
  6. Step 6: Final answer
    x = 571,379.55

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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.