Finding the Fourth Proportional to 1,490,577.49, 2,056,997.28 and 811,513.99
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Solution
The fourth proportional to 1,490,577.49, 2,056,997.28 and 811,513.99 is: 1,119,889.49
Step by Step Solution
- Step 1: Write the proportion equation
1,490,577.49 : 2,056,997.28 = 811,513.99 : x - Step 2: Convert to fraction form
1,490,577.49/2,056,997.28 = 811,513.99/x - Step 3: Cross multiply
1,490,577.49x = 2,056,997.28 × 811,513.99 - Step 4: Simplify right side
1,490,577.49x = 1,669,282,071,161.61 - Step 5: Solve for x
x = 1,669,282,071,161.61/1,490,577.49 - Step 6: Final answer
x = 1,119,889.49
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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.