Finding the Fourth Proportional to 1,081,557.36, 1,621,461.20 and 660,691.08
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Solution
The fourth proportional to 1,081,557.36, 1,621,461.20 and 660,691.08 is: 990,502.20
Step by Step Solution
- Step 1: Write the proportion equation
1,081,557.36 : 1,621,461.20 = 660,691.08 : x - Step 2: Convert to fraction form
1,081,557.36/1,621,461.20 = 660,691.08/x - Step 3: Cross multiply
1,081,557.36x = 1,621,461.20 × 660,691.08 - Step 4: Simplify right side
1,081,557.36x = 1,071,284,948,102.64 - Step 5: Solve for x
x = 1,071,284,948,102.64/1,081,557.36 - Step 6: Final answer
x = 990,502.20
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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.