Finding the Fourth Proportional to 1,008,459.84, 1,391,233.68 and 721,875.36
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Solution
The fourth proportional to 1,008,459.84, 1,391,233.68 and 721,875.36 is: 995,872.39
Step by Step Solution
- Step 1: Write the proportion equation
1,008,459.84 : 1,391,233.68 = 721,875.36 : x - Step 2: Convert to fraction form
1,008,459.84/1,391,233.68 = 721,875.36/x - Step 3: Cross multiply
1,008,459.84x = 1,391,233.68 × 721,875.36 - Step 4: Simplify right side
1,008,459.84x = 1,004,297,313,594.12 - Step 5: Solve for x
x = 1,004,297,313,594.12/1,008,459.84 - Step 6: Final answer
x = 995,872.39
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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.