Finding the Fourth Proportional to 2,129,619.24, 2,939,132.52 and 1,212,071.76
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Solution
The fourth proportional to 2,129,619.24, 2,939,132.52 and 1,212,071.76 is: 1,672,805.85
Step by Step Solution
- Step 1: Write the proportion equation
2,129,619.24 : 2,939,132.52 = 1,212,071.76 : x - Step 2: Convert to fraction form
2,129,619.24/2,939,132.52 = 1,212,071.76/x - Step 3: Cross multiply
2,129,619.24x = 2,939,132.52 × 1,212,071.76 - Step 4: Simplify right side
2,129,619.24x = 3,562,439,526,389.64 - Step 5: Solve for x
x = 3,562,439,526,389.64/2,129,619.24 - Step 6: Final answer
x = 1,672,805.85
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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.