Finding the Fourth Proportional to 511,840,943.40, 767,761,415.10 and 455,405,845.80
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Solution
The fourth proportional to 511,840,943.40, 767,761,415.10 and 455,405,845.80 is: 683,108,768.70
Step by Step Solution
- Step 1: Write the proportion equation
511,840,943.40 : 767,761,415.10 = 455,405,845.80 : x - Step 2: Convert to fraction form
511,840,943.40/767,761,415.10 = 455,405,845.80/x - Step 3: Cross multiply
511,840,943.40x = 767,761,415.10 × 455,405,845.80 - Step 4: Simplify right side
511,840,943.40x = 349,643,036,616,220,416 - Step 5: Solve for x
x = 349,643,036,616,220,416/511,840,943.40 - Step 6: Final answer
x = 683,108,768.70
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1.5x scale
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.