Finding the Fourth Proportional to 6,831,819.40, 9,421,804.68 and 5,668,424.02
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Solution
The fourth proportional to 6,831,819.40, 9,421,804.68 and 5,668,424.02 is: 7,817,358.86
Step by Step Solution
- Step 1: Write the proportion equation
6,831,819.40 : 9,421,804.68 = 5,668,424.02 : x - Step 2: Convert to fraction form
6,831,819.40/9,421,804.68 = 5,668,424.02/x - Step 3: Cross multiply
6,831,819.40x = 9,421,804.68 × 5,668,424.02 - Step 4: Simplify right side
6,831,819.40x = 53,406,783,923,882.25 - Step 5: Solve for x
x = 53,406,783,923,882.25/6,831,819.40 - Step 6: Final answer
x = 7,817,358.86
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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.