Finding the Fourth Proportional to 1,579,628.79, 2,179,874.21 and 891,305.91
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Solution
The fourth proportional to 1,579,628.79, 2,179,874.21 and 891,305.91 is: 1,229,994.52
Step by Step Solution
- Step 1: Write the proportion equation
1,579,628.79 : 2,179,874.21 = 891,305.91 : x - Step 2: Convert to fraction form
1,579,628.79/2,179,874.21 = 891,305.91/x - Step 3: Cross multiply
1,579,628.79x = 2,179,874.21 × 891,305.91 - Step 4: Simplify right side
1,579,628.79x = 1,942,934,761,973.05 - Step 5: Solve for x
x = 1,942,934,761,973.05/1,579,628.79 - Step 6: Final answer
x = 1,229,994.52
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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.