Finding the Fourth Proportional to 1,643,921,231.56, 2,465,881,799.68 and 758,344,577.44
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Solution
The fourth proportional to 1,643,921,231.56, 2,465,881,799.68 and 758,344,577.44 is: 1,137,516,844.18
Step by Step Solution
- Step 1: Write the proportion equation
1,643,921,231.56 : 2,465,881,799.68 = 758,344,577.44 : x - Step 2: Convert to fraction form
1,643,921,231.56/2,465,881,799.68 = 758,344,577.44/x - Step 3: Cross multiply
1,643,921,231.56x = 2,465,881,799.68 × 758,344,577.44 - Step 4: Simplify right side
1,643,921,231.56x = 1,869,988,091,395,316,224 - Step 5: Solve for x
x = 1,869,988,091,395,316,224/1,643,921,231.56 - Step 6: Final answer
x = 1,137,516,844.18
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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.