Finding the Fourth Proportional to 2,728,872,975.42, 3,765,881,295.94 and 1,539,438,265.78
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Solution
The fourth proportional to 2,728,872,975.42, 3,765,881,295.94 and 1,539,438,265.78 is: 2,124,445,448.20
Step by Step Solution
- Step 1: Write the proportion equation
2,728,872,975.42 : 3,765,881,295.94 = 1,539,438,265.78 : x - Step 2: Convert to fraction form
2,728,872,975.42/3,765,881,295.94 = 1,539,438,265.78/x - Step 3: Cross multiply
2,728,872,975.42x = 3,765,881,295.94 × 1,539,438,265.78 - Step 4: Simplify right side
2,728,872,975.42x = 5,797,341,771,355,212,800 - Step 5: Solve for x
x = 5,797,341,771,355,212,800/2,728,872,975.42 - Step 6: Final answer
x = 2,124,445,448.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.