Finding the Fourth Proportional to 512,368.93, 768,551.77 and 138,391.93
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Solution
The fourth proportional to 512,368.93, 768,551.77 and 138,391.93 is: 207,587.46
Step by Step Solution
- Step 1: Write the proportion equation
512,368.93 : 768,551.77 = 138,391.93 : x - Step 2: Convert to fraction form
512,368.93/768,551.77 = 138,391.93/x - Step 3: Cross multiply
512,368.93x = 768,551.77 × 138,391.93 - Step 4: Simplify right side
512,368.93x = 106,361,362,755.22 - Step 5: Solve for x
x = 106,361,362,755.22/512,368.93 - Step 6: Final answer
x = 207,587.46
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1.5x scale
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.