Finding the Fourth Proportional to 2,168,043.90, 2,991,258.28 and 1,308,251.58
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Solution
The fourth proportional to 2,168,043.90, 2,991,258.28 and 1,308,251.58 is: 1,804,999.60
Step by Step Solution
- Step 1: Write the proportion equation
2,168,043.90 : 2,991,258.28 = 1,308,251.58 : x - Step 2: Convert to fraction form
2,168,043.90/2,991,258.28 = 1,308,251.58/x - Step 3: Cross multiply
2,168,043.90x = 2,991,258.28 × 1,308,251.58 - Step 4: Simplify right side
2,168,043.90x = 3,913,318,370,998.08 - Step 5: Solve for x
x = 3,913,318,370,998.08/2,168,043.90 - Step 6: Final answer
x = 1,804,999.60
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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.