Home / 2,990,123.70-4,484,456.55-859,985.70

Finding the Fourth Proportional to 2,990,123.70, 4,484,456.55 and 859,985.70

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Solution

The fourth proportional to 2,990,123.70, 4,484,456.55 and 859,985.70 is: 1,289,768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,123.70 : 4,484,456.55 = 859,985.70 : x
  2. Step 2: Convert to fraction form
    2,990,123.70/4,484,456.55 = 859,985.70/x
  3. Step 3: Cross multiply
    2,990,123.70x = 4,484,456.55 × 859,985.70
  4. Step 4: Simplify right side
    2,990,123.70x = 3,856,568,505,271.33
  5. Step 5: Solve for x
    x = 3,856,568,505,271.33/2,990,123.70
  6. Step 6: Final answer
    x = 1,289,768.88

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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.