Finding the Fourth Proportional to 1,290,368.53, 1,780,197.10 and 746,403.31
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Solution
The fourth proportional to 1,290,368.53, 1,780,197.10 and 746,403.31 is: 1,029,740.71
Step by Step Solution
- Step 1: Write the proportion equation
1,290,368.53 : 1,780,197.10 = 746,403.31 : x - Step 2: Convert to fraction form
1,290,368.53/1,780,197.10 = 746,403.31/x - Step 3: Cross multiply
1,290,368.53x = 1,780,197.10 × 746,403.31 - Step 4: Simplify right side
1,290,368.53x = 1,328,745,007,892.40 - Step 5: Solve for x
x = 1,328,745,007,892.40/1,290,368.53 - Step 6: Final answer
x = 1,029,740.71
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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.