Finding the Fourth Proportional to 2,109,219.84, 2,910,979.12 and 1,191,487.68
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Solution
The fourth proportional to 2,109,219.84, 2,910,979.12 and 1,191,487.68 is: 1,644,397.47
Step by Step Solution
- Step 1: Write the proportion equation
2,109,219.84 : 2,910,979.12 = 1,191,487.68 : x - Step 2: Convert to fraction form
2,109,219.84/2,910,979.12 = 1,191,487.68/x - Step 3: Cross multiply
2,109,219.84x = 2,910,979.12 × 1,191,487.68 - Step 4: Simplify right side
2,109,219.84x = 3,468,395,758,217.24 - Step 5: Solve for x
x = 3,468,395,758,217.24/2,109,219.84 - Step 6: Final answer
x = 1,644,397.47
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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.