Finding the Fourth Proportional to 3,917,693.28, 5,406,416.68 and 2,198,813.80
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Solution
The fourth proportional to 3,917,693.28, 5,406,416.68 and 2,198,813.80 is: 3,034,363.02
Step by Step Solution
- Step 1: Write the proportion equation
3,917,693.28 : 5,406,416.68 = 2,198,813.80 : x - Step 2: Convert to fraction form
3,917,693.28/5,406,416.68 = 2,198,813.80/x - Step 3: Cross multiply
3,917,693.28x = 5,406,416.68 × 2,198,813.80 - Step 4: Simplify right side
3,917,693.28x = 11,887,703,604,534.18 - Step 5: Solve for x
x = 11,887,703,604,534.18/3,917,693.28 - Step 6: Final answer
x = 3,034,363.02
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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.