Finding the Fourth Proportional to 770,405,420.10, 1,063,165,487.67 and 452,780,367.96
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Solution
The fourth proportional to 770,405,420.10, 1,063,165,487.67 and 452,780,367.96 is: 624,840,438.75
Step by Step Solution
- Step 1: Write the proportion equation
770,405,420.10 : 1,063,165,487.67 = 452,780,367.96 : x - Step 2: Convert to fraction form
770,405,420.10/1,063,165,487.67 = 452,780,367.96/x - Step 3: Cross multiply
770,405,420.10x = 1,063,165,487.67 × 452,780,367.96 - Step 4: Simplify right side
770,405,420.10x = 481,380,460,709,595,392 - Step 5: Solve for x
x = 481,380,460,709,595,392/770,405,420.10 - Step 6: Final answer
x = 624,840,438.75
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1.5x scale
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.