Finding the Fourth Proportional to 815,378.40, 1,125,274.21 and 452,802.15
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Solution
The fourth proportional to 815,378.40, 1,125,274.21 and 452,802.15 is: 624,895.85
Step by Step Solution
- Step 1: Write the proportion equation
815,378.40 : 1,125,274.21 = 452,802.15 : x - Step 2: Convert to fraction form
815,378.40/1,125,274.21 = 452,802.15/x - Step 3: Cross multiply
815,378.40x = 1,125,274.21 × 452,802.15 - Step 4: Simplify right side
815,378.40x = 509,526,580,495.55 - Step 5: Solve for x
x = 509,526,580,495.55/815,378.40 - Step 6: Final answer
x = 624,895.85
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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.