Finding the Fourth Proportional to 419,905,439.80, 629,858,159.70 and 410,947,487.80
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Solution
The fourth proportional to 419,905,439.80, 629,858,159.70 and 410,947,487.80 is: 616,421,231.70
Step by Step Solution
- Step 1: Write the proportion equation
419,905,439.80 : 629,858,159.70 = 410,947,487.80 : x - Step 2: Convert to fraction form
419,905,439.80/629,858,159.70 = 410,947,487.80/x - Step 3: Cross multiply
419,905,439.80x = 629,858,159.70 × 410,947,487.80 - Step 4: Simplify right side
419,905,439.80x = 258,838,628,399,046,240 - Step 5: Solve for x
x = 258,838,628,399,046,240/419,905,439.80 - Step 6: Final answer
x = 616,421,231.70
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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.