Finding the Fourth Proportional to 447,821.11, 618,780.05 and 357,918.99
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Solution
The fourth proportional to 447,821.11, 618,780.05 and 357,918.99 is: 494,557.15
Step by Step Solution
- Step 1: Write the proportion equation
447,821.11 : 618,780.05 = 357,918.99 : x - Step 2: Convert to fraction form
447,821.11/618,780.05 = 357,918.99/x - Step 3: Cross multiply
447,821.11x = 618,780.05 × 357,918.99 - Step 4: Simplify right side
447,821.11x = 221,473,130,528.15 - Step 5: Solve for x
x = 221,473,130,528.15/447,821.11 - Step 6: Final answer
x = 494,557.15
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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.