Finding the Fourth Proportional to 1,118,346,299.24, 1,677,761,598.99 and 428,253,577.81
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Solution
The fourth proportional to 1,118,346,299.24, 1,677,761,598.99 and 428,253,577.81 is: 642,473,094.40
Step by Step Solution
- Step 1: Write the proportion equation
1,118,346,299.24 : 1,677,761,598.99 = 428,253,577.81 : x - Step 2: Convert to fraction form
1,118,346,299.24/1,677,761,598.99 = 428,253,577.81/x - Step 3: Cross multiply
1,118,346,299.24x = 1,677,761,598.99 × 428,253,577.81 - Step 4: Simplify right side
1,118,346,299.24x = 718,507,407,477,084,160 - Step 5: Solve for x
x = 718,507,407,477,084,160/1,118,346,299.24 - Step 6: Final answer
x = 642,473,094.40
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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.