Finding the Fourth Proportional to 777,625.60, 1,073,187.12 and 438,116.80
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Solution
The fourth proportional to 777,625.60, 1,073,187.12 and 438,116.80 is: 604,637.12
Step by Step Solution
- Step 1: Write the proportion equation
777,625.60 : 1,073,187.12 = 438,116.80 : x - Step 2: Convert to fraction form
777,625.60/1,073,187.12 = 438,116.80/x - Step 3: Cross multiply
777,625.60x = 1,073,187.12 × 438,116.80 - Step 4: Simplify right side
777,625.60x = 470,181,306,815.62 - Step 5: Solve for x
x = 470,181,306,815.62/777,625.60 - Step 6: Final answer
x = 604,637.12
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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.