Finding the Fourth Proportional to 7,878,206.20, 10,880,892.58 and 5,295,402.94
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Solution
The fourth proportional to 7,878,206.20, 10,880,892.58 and 5,295,402.94 is: 7,313,683.99
Step by Step Solution
- Step 1: Write the proportion equation
7,878,206.20 : 10,880,892.58 = 5,295,402.94 : x - Step 2: Convert to fraction form
7,878,206.20/10,880,892.58 = 5,295,402.94/x - Step 3: Cross multiply
7,878,206.20x = 10,880,892.58 × 5,295,402.94 - Step 4: Simplify right side
7,878,206.20x = 57,618,710,557,956.19 - Step 5: Solve for x
x = 57,618,710,557,956.19/7,878,206.20 - Step 6: Final answer
x = 7,313,683.99
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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.