Finding the Fourth Proportional to 661,450,893.92, 912,889,153.50 and 379,303,749.44
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Solution
The fourth proportional to 661,450,893.92, 912,889,153.50 and 379,303,749.44 is: 523,489,017.75
Step by Step Solution
- Step 1: Write the proportion equation
661,450,893.92 : 912,889,153.50 = 379,303,749.44 : x - Step 2: Convert to fraction form
661,450,893.92/912,889,153.50 = 379,303,749.44/x - Step 3: Cross multiply
661,450,893.92x = 912,889,153.50 × 379,303,749.44 - Step 4: Simplify right side
661,450,893.92x = 346,262,278,745,657,728 - Step 5: Solve for x
x = 346,262,278,745,657,728/661,450,893.92 - Step 6: Final answer
x = 523,489,017.75
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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.