Finding the Fourth Proportional to 2,166,326.36, 2,988,589.20 and 1,306,408.76
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Solution
The fourth proportional to 2,166,326.36, 2,988,589.20 and 1,306,408.76 is: 1,802,276.51
Step by Step Solution
- Step 1: Write the proportion equation
2,166,326.36 : 2,988,589.20 = 1,306,408.76 : x - Step 2: Convert to fraction form
2,166,326.36/2,988,589.20 = 1,306,408.76/x - Step 3: Cross multiply
2,166,326.36x = 2,988,589.20 × 1,306,408.76 - Step 4: Simplify right side
2,166,326.36x = 3,904,319,110,921.39 - Step 5: Solve for x
x = 3,904,319,110,921.39/2,166,326.36 - Step 6: Final answer
x = 1,802,276.51
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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.