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Finding the Fourth Proportional to 419,907,477.60, 629,861,216.40 and 247,295,440.80

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Solution

The fourth proportional to 419,907,477.60, 629,861,216.40 and 247,295,440.80 is: 370,943,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,477.60 : 629,861,216.40 = 247,295,440.80 : x
  2. Step 2: Convert to fraction form
    419,907,477.60/629,861,216.40 = 247,295,440.80/x
  3. Step 3: Cross multiply
    419,907,477.60x = 629,861,216.40 × 247,295,440.80
  4. Step 4: Simplify right side
    419,907,477.60x = 155,761,807,152,462,176
  5. Step 5: Solve for x
    x = 155,761,807,152,462,176/419,907,477.60
  6. Step 6: Final answer
    x = 370,943,161.20

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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.