Finding the Fourth Proportional to 1,915,351.18, 2,643,204.99 and 1,055,942.19
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Solution
The fourth proportional to 1,915,351.18, 2,643,204.99 and 1,055,942.19 is: 1,457,211.45
Step by Step Solution
- Step 1: Write the proportion equation
1,915,351.18 : 2,643,204.99 = 1,055,942.19 : x - Step 2: Convert to fraction form
1,915,351.18/2,643,204.99 = 1,055,942.19/x - Step 3: Cross multiply
1,915,351.18x = 2,643,204.99 × 1,055,942.19 - Step 4: Simplify right side
1,915,351.18x = 2,791,071,669,719.31 - Step 5: Solve for x
x = 2,791,071,669,719.31/1,915,351.18 - Step 6: Final answer
x = 1,457,211.45
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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.