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Finding the Fourth Proportional to 673,764,815.20, 1,010,647,222.80 and 411,870,690.40

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Solution

The fourth proportional to 673,764,815.20, 1,010,647,222.80 and 411,870,690.40 is: 617,806,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,764,815.20 : 1,010,647,222.80 = 411,870,690.40 : x
  2. Step 2: Convert to fraction form
    673,764,815.20/1,010,647,222.80 = 411,870,690.40/x
  3. Step 3: Cross multiply
    673,764,815.20x = 1,010,647,222.80 × 411,870,690.40
  4. Step 4: Simplify right side
    673,764,815.20x = 416,255,969,405,478,592
  5. Step 5: Solve for x
    x = 416,255,969,405,478,592/673,764,815.20
  6. Step 6: Final answer
    x = 617,806,035.60

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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.