Finding the Fourth Proportional to 1,246,461,728, 1,720,167,832.32 and 689,535,173.12
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Solution
The fourth proportional to 1,246,461,728, 1,720,167,832.32 and 689,535,173.12 is: 951,586,556.90
Step by Step Solution
- Step 1: Write the proportion equation
1,246,461,728 : 1,720,167,832.32 = 689,535,173.12 : x - Step 2: Convert to fraction form
1,246,461,728/1,720,167,832.32 = 689,535,173.12/x - Step 3: Cross multiply
1,246,461,728x = 1,720,167,832.32 × 689,535,173.12 - Step 4: Simplify right side
1,246,461,728x = 1,186,116,224,054,226,176 - Step 5: Solve for x
x = 1,186,116,224,054,226,176/1,246,461,728 - Step 6: Final answer
x = 951,586,556.90
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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.