Finding the Fourth Proportional to 419,854,220.20, 629,781,330.30 and 267,177,125.80
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Solution
The fourth proportional to 419,854,220.20, 629,781,330.30 and 267,177,125.80 is: 400,765,688.70
Step by Step Solution
- Step 1: Write the proportion equation
419,854,220.20 : 629,781,330.30 = 267,177,125.80 : x - Step 2: Convert to fraction form
419,854,220.20/629,781,330.30 = 267,177,125.80/x - Step 3: Cross multiply
419,854,220.20x = 629,781,330.30 × 267,177,125.80 - Step 4: Simplify right side
419,854,220.20x = 168,263,165,712,054,432 - Step 5: Solve for x
x = 168,263,165,712,054,432/419,854,220.20 - Step 6: Final answer
x = 400,765,688.70
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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.