Finding the Fourth Proportional to 521,362,749.96, 719,487,964.26 and 286,435,122.48
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Solution
The fourth proportional to 521,362,749.96, 719,487,964.26 and 286,435,122.48 is: 395,284,517.70
Step by Step Solution
- Step 1: Write the proportion equation
521,362,749.96 : 719,487,964.26 = 286,435,122.48 : x - Step 2: Convert to fraction form
521,362,749.96/719,487,964.26 = 286,435,122.48/x - Step 3: Cross multiply
521,362,749.96x = 719,487,964.26 × 286,435,122.48 - Step 4: Simplify right side
521,362,749.96x = 206,086,623,165,698,976 - Step 5: Solve for x
x = 206,086,623,165,698,976/521,362,749.96 - Step 6: Final answer
x = 395,284,517.70
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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.