Finding the Fourth Proportional to 419,854,219.20, 629,781,328.80 and 267,177,124.80
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Solution
The fourth proportional to 419,854,219.20, 629,781,328.80 and 267,177,124.80 is: 400,765,687.20
Step by Step Solution
- Step 1: Write the proportion equation
419,854,219.20 : 629,781,328.80 = 267,177,124.80 : x - Step 2: Convert to fraction form
419,854,219.20/629,781,328.80 = 267,177,124.80/x - Step 3: Cross multiply
419,854,219.20x = 629,781,328.80 × 267,177,124.80 - Step 4: Simplify right side
419,854,219.20x = 168,263,164,681,507,424 - Step 5: Solve for x
x = 168,263,164,681,507,424/419,854,219.20 - Step 6: Final answer
x = 400,765,687.20
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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.