Home / 8,123,069.40-12,189,269.70-3,078,000.60

Finding the Fourth Proportional to 8,123,069.40, 12,189,269.70 and 3,078,000.60

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Solution

The fourth proportional to 8,123,069.40, 12,189,269.70 and 3,078,000.60 is: 4,618,768.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123,069.40 : 12,189,269.70 = 3,078,000.60 : x
  2. Step 2: Convert to fraction form
    8,123,069.40/12,189,269.70 = 3,078,000.60/x
  3. Step 3: Cross multiply
    8,123,069.40x = 12,189,269.70 × 3,078,000.60
  4. Step 4: Simplify right side
    8,123,069.40x = 37,518,579,450,161.82
  5. Step 5: Solve for x
    x = 37,518,579,450,161.82/8,123,069.40
  6. Step 6: Final answer
    x = 4,618,768.79

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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.