Home / 419,867,246.80-629,800,870.20-257,783,611.60

Finding the Fourth Proportional to 419,867,246.80, 629,800,870.20 and 257,783,611.60

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Solution

The fourth proportional to 419,867,246.80, 629,800,870.20 and 257,783,611.60 is: 386,675,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,867,246.80 : 629,800,870.20 = 257,783,611.60 : x
  2. Step 2: Convert to fraction form
    419,867,246.80/629,800,870.20 = 257,783,611.60/x
  3. Step 3: Cross multiply
    419,867,246.80x = 629,800,870.20 × 257,783,611.60
  4. Step 4: Simplify right side
    419,867,246.80x = 162,352,342,908,978,816
  5. Step 5: Solve for x
    x = 162,352,342,908,978,816/419,867,246.80
  6. Step 6: Final answer
    x = 386,675,417.40

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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.