Finding the Fourth Proportional to 1,915,396.68, 2,643,237.90 and 1,055,954.28
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Solution
The fourth proportional to 1,915,396.68, 2,643,237.90 and 1,055,954.28 is: 1,457,211.66
Step by Step Solution
- Step 1: Write the proportion equation
1,915,396.68 : 2,643,237.90 = 1,055,954.28 : x - Step 2: Convert to fraction form
1,915,396.68/2,643,237.90 = 1,055,954.28/x - Step 3: Cross multiply
1,915,396.68x = 2,643,237.90 × 1,055,954.28 - Step 4: Simplify right side
1,915,396.68x = 2,791,138,373,563.21 - Step 5: Solve for x
x = 2,791,138,373,563.21/1,915,396.68 - Step 6: Final answer
x = 1,457,211.66
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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.