Finding the Fourth Proportional to 1,991,748.70, 2,987,623.05 and 1,641,828.70
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Solution
The fourth proportional to 1,991,748.70, 2,987,623.05 and 1,641,828.70 is: 2,462,743.05
Step by Step Solution
- Step 1: Write the proportion equation
1,991,748.70 : 2,987,623.05 = 1,641,828.70 : x - Step 2: Convert to fraction form
1,991,748.70/2,987,623.05 = 1,641,828.70/x - Step 3: Cross multiply
1,991,748.70x = 2,987,623.05 × 1,641,828.70 - Step 4: Simplify right side
1,991,748.70x = 4,905,165,268,271.53 - Step 5: Solve for x
x = 4,905,165,268,271.53/1,991,748.70 - Step 6: Final answer
x = 2,462,743.05
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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.