Finding the Fourth Proportional to 1,138,971, 1,571,812.79 and 629,706.18
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Solution
The fourth proportional to 1,138,971, 1,571,812.79 and 629,706.18 is: 869,012.67
Step by Step Solution
- Step 1: Write the proportion equation
1,138,971 : 1,571,812.79 = 629,706.18 : x - Step 2: Convert to fraction form
1,138,971/1,571,812.79 = 629,706.18/x - Step 3: Cross multiply
1,138,971x = 1,571,812.79 × 629,706.18 - Step 4: Simplify right side
1,138,971x = 989,780,227,666.04 - Step 5: Solve for x
x = 989,780,227,666.04/1,138,971 - Step 6: Final answer
x = 869,012.67
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.