Finding the Fourth Proportional to 2,154,415.49, 2,973,226.40 and 1,187,543.60
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Solution
The fourth proportional to 2,154,415.49, 2,973,226.40 and 1,187,543.60 is: 1,638,883.49
Step by Step Solution
- Step 1: Write the proportion equation
2,154,415.49 : 2,973,226.40 = 1,187,543.60 : x - Step 2: Convert to fraction form
2,154,415.49/2,973,226.40 = 1,187,543.60/x - Step 3: Cross multiply
2,154,415.49x = 2,973,226.40 × 1,187,543.60 - Step 4: Simplify right side
2,154,415.49x = 3,530,835,961,867.19 - Step 5: Solve for x
x = 3,530,835,961,867.19/2,154,415.49 - Step 6: Final answer
x = 1,638,883.49
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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.