Finding the Fourth Proportional to 660,474.69, 911,142.11 and 445,683.96
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Solution
The fourth proportional to 660,474.69, 911,142.11 and 445,683.96 is: 614,832.68
Step by Step Solution
- Step 1: Write the proportion equation
660,474.69 : 911,142.11 = 445,683.96 : x - Step 2: Convert to fraction form
660,474.69/911,142.11 = 445,683.96/x - Step 3: Cross multiply
660,474.69x = 911,142.11 × 445,683.96 - Step 4: Simplify right side
660,474.69x = 406,081,421,479.14 - Step 5: Solve for x
x = 406,081,421,479.14/660,474.69 - Step 6: Final answer
x = 614,832.68
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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.