Finding the Fourth Proportional to 7,742,644.11, 10,684,604.25 and 4,257,972.09
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Solution
The fourth proportional to 7,742,644.11, 10,684,604.25 and 4,257,972.09 is: 5,875,866.96
Step by Step Solution
- Step 1: Write the proportion equation
7,742,644.11 : 10,684,604.25 = 4,257,972.09 : x - Step 2: Convert to fraction form
7,742,644.11/10,684,604.25 = 4,257,972.09/x - Step 3: Cross multiply
7,742,644.11x = 10,684,604.25 × 4,257,972.09 - Step 4: Simplify right side
7,742,644.11x = 45,494,746,689,195.38 - Step 5: Solve for x
x = 45,494,746,689,195.38/7,742,644.11 - Step 6: Final answer
x = 5,875,866.96
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1.5x scale
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.