Finding the Fourth Proportional to 1,213,957.90, 1,821,230.07 and 455,807.62
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Solution
The fourth proportional to 1,213,957.90, 1,821,230.07 and 455,807.62 is: 683,821.53
Step by Step Solution
- Step 1: Write the proportion equation
1,213,957.90 : 1,821,230.07 = 455,807.62 : x - Step 2: Convert to fraction form
1,213,957.90/1,821,230.07 = 455,807.62/x - Step 3: Cross multiply
1,213,957.90x = 1,821,230.07 × 455,807.62 - Step 4: Simplify right side
1,213,957.90x = 830,130,543,679.13 - Step 5: Solve for x
x = 830,130,543,679.13/1,213,957.90 - Step 6: Final answer
x = 683,821.53
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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.