Finding the Fourth Proportional to 2,129,871.12, 2,939,236.38 and 1,163,008.16
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Solution
The fourth proportional to 2,129,871.12, 2,939,236.38 and 1,163,008.16 is: 1,604,959.03
Step by Step Solution
- Step 1: Write the proportion equation
2,129,871.12 : 2,939,236.38 = 1,163,008.16 : x - Step 2: Convert to fraction form
2,129,871.12/2,939,236.38 = 1,163,008.16/x - Step 3: Cross multiply
2,129,871.12x = 2,939,236.38 × 1,163,008.16 - Step 4: Simplify right side
2,129,871.12x = 3,418,355,894,108.86 - Step 5: Solve for x
x = 3,418,355,894,108.86/2,129,871.12 - Step 6: Final answer
x = 1,604,959.03
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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.