Finding the Fourth Proportional to 7,130,187.20, 9,840,916.08 and 4,231,176.54
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Solution
The fourth proportional to 7,130,187.20, 9,840,916.08 and 4,231,176.54 is: 5,839,769.99
Step by Step Solution
- Step 1: Write the proportion equation
7,130,187.20 : 9,840,916.08 = 4,231,176.54 : x - Step 2: Convert to fraction form
7,130,187.20/9,840,916.08 = 4,231,176.54/x - Step 3: Cross multiply
7,130,187.20x = 9,840,916.08 × 4,231,176.54 - Step 4: Simplify right side
7,130,187.20x = 41,638,653,249,804.77 - Step 5: Solve for x
x = 41,638,653,249,804.77/7,130,187.20 - Step 6: Final answer
x = 5,839,769.99
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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.