Finding the Fourth Proportional to 1,977,631.29, 2,729,188.75 and 1,118,173.09
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Solution
The fourth proportional to 1,977,631.29, 2,729,188.75 and 1,118,173.09 is: 1,543,111.41
Step by Step Solution
- Step 1: Write the proportion equation
1,977,631.29 : 2,729,188.75 = 1,118,173.09 : x - Step 2: Convert to fraction form
1,977,631.29/2,729,188.75 = 1,118,173.09/x - Step 3: Cross multiply
1,977,631.29x = 2,729,188.75 × 1,118,173.09 - Step 4: Simplify right side
1,977,631.29x = 3,051,705,417,780.74 - Step 5: Solve for x
x = 3,051,705,417,780.74/1,977,631.29 - Step 6: Final answer
x = 1,543,111.41
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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.