Finding the Fourth Proportional to 1,268,188,090.80, 1,902,282,136.20 and 579,440,554.80
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Solution
The fourth proportional to 1,268,188,090.80, 1,902,282,136.20 and 579,440,554.80 is: 869,160,832.20
Step by Step Solution
- Step 1: Write the proportion equation
1,268,188,090.80 : 1,902,282,136.20 = 579,440,554.80 : x - Step 2: Convert to fraction form
1,268,188,090.80/1,902,282,136.20 = 579,440,554.80/x - Step 3: Cross multiply
1,268,188,090.80x = 1,902,282,136.20 × 579,440,554.80 - Step 4: Simplify right side
1,268,188,090.80x = 1,102,259,416,385,857,152 - Step 5: Solve for x
x = 1,102,259,416,385,857,152/1,268,188,090.80 - Step 6: Final answer
x = 869,160,832.20
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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.