Finding the Fourth Proportional to 2,172,105.18, 2,997,459.36 and 1,205,214.66
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Solution
The fourth proportional to 2,172,105.18, 2,997,459.36 and 1,205,214.66 is: 1,663,170.82
Step by Step Solution
- Step 1: Write the proportion equation
2,172,105.18 : 2,997,459.36 = 1,205,214.66 : x - Step 2: Convert to fraction form
2,172,105.18/2,997,459.36 = 1,205,214.66/x - Step 3: Cross multiply
2,172,105.18x = 2,997,459.36 × 1,205,214.66 - Step 4: Simplify right side
2,172,105.18x = 3,612,581,963,426.22 - Step 5: Solve for x
x = 3,612,581,963,426.22/2,172,105.18 - Step 6: Final answer
x = 1,663,170.82
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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.