Finding the Fourth Proportional to 2,989,905.80, 4,484,858.70 and 2,972,191.10
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Solution
The fourth proportional to 2,989,905.80, 4,484,858.70 and 2,972,191.10 is: 4,458,286.65
Step by Step Solution
- Step 1: Write the proportion equation
2,989,905.80 : 4,484,858.70 = 2,972,191.10 : x - Step 2: Convert to fraction form
2,989,905.80/4,484,858.70 = 2,972,191.10/x - Step 3: Cross multiply
2,989,905.80x = 4,484,858.70 × 2,972,191.10 - Step 4: Simplify right side
2,989,905.80x = 13,329,857,112,897.57 - Step 5: Solve for x
x = 13,329,857,112,897.57/2,989,905.80 - Step 6: Final answer
x = 4,458,286.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.