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Finding the Fourth Proportional to 673,764,939.20, 1,010,647,408.80 and 411,870,814.40

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Solution

The fourth proportional to 673,764,939.20, 1,010,647,408.80 and 411,870,814.40 is: 617,806,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,764,939.20 : 1,010,647,408.80 = 411,870,814.40 : x
  2. Step 2: Convert to fraction form
    673,764,939.20/1,010,647,408.80 = 411,870,814.40/x
  3. Step 3: Cross multiply
    673,764,939.20x = 1,010,647,408.80 × 411,870,814.40
  4. Step 4: Simplify right side
    673,764,939.20x = 416,256,171,333,705,664
  5. Step 5: Solve for x
    x = 416,256,171,333,705,664/673,764,939.20
  6. Step 6: Final answer
    x = 617,806,221.60

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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.