Finding the Fourth Proportional to 1,118,487.42, 1,543,021.38 and 755,779.01
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Solution
The fourth proportional to 1,118,487.42, 1,543,021.38 and 755,779.01 is: 1,042,643.08
Step by Step Solution
- Step 1: Write the proportion equation
1,118,487.42 : 1,543,021.38 = 755,779.01 : x - Step 2: Convert to fraction form
1,118,487.42/1,543,021.38 = 755,779.01/x - Step 3: Cross multiply
1,118,487.42x = 1,543,021.38 × 755,779.01 - Step 4: Simplify right side
1,118,487.42x = 1,166,183,163,270.13 - Step 5: Solve for x
x = 1,166,183,163,270.13/1,118,487.42 - Step 6: Final answer
x = 1,042,643.08
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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.