Finding the Fourth Proportional to 618,220,915.99, 853,153,182.64 and 335,968,959.53
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Solution
The fourth proportional to 618,220,915.99, 853,153,182.64 and 335,968,959.53 is: 463,641,684.84
Step by Step Solution
- Step 1: Write the proportion equation
618,220,915.99 : 853,153,182.64 = 335,968,959.53 : x - Step 2: Convert to fraction form
618,220,915.99/853,153,182.64 = 335,968,959.53/x - Step 3: Cross multiply
618,220,915.99x = 853,153,182.64 × 335,968,959.53 - Step 4: Simplify right side
618,220,915.99x = 286,632,987,093,821,728 - Step 5: Solve for x
x = 286,632,987,093,821,728/618,220,915.99 - Step 6: Final answer
x = 463,641,684.84
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1.5x scale
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.