Finding the Fourth Proportional to 660,265.74, 911,170.53 and 388,345.14
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Solution
The fourth proportional to 660,265.74, 911,170.53 and 388,345.14 is: 535,918.53
Step by Step Solution
- Step 1: Write the proportion equation
660,265.74 : 911,170.53 = 388,345.14 : x - Step 2: Convert to fraction form
660,265.74/911,170.53 = 388,345.14/x - Step 3: Cross multiply
660,265.74x = 911,170.53 × 388,345.14 - Step 4: Simplify right side
660,265.74x = 353,848,647,036.72 - Step 5: Solve for x
x = 353,848,647,036.72/660,265.74 - Step 6: Final answer
x = 535,918.53
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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.