Finding the Fourth Proportional to 1,387,201.75, 2,080,802.63 and 389,929.75
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Solution
The fourth proportional to 1,387,201.75, 2,080,802.63 and 389,929.75 is: 584,894.63
Step by Step Solution
- Step 1: Write the proportion equation
1,387,201.75 : 2,080,802.63 = 389,929.75 : x - Step 2: Convert to fraction form
1,387,201.75/2,080,802.63 = 389,929.75/x - Step 3: Cross multiply
1,387,201.75x = 2,080,802.63 × 389,929.75 - Step 4: Simplify right side
1,387,201.75x = 811,366,849,315.24 - Step 5: Solve for x
x = 811,366,849,315.24/1,387,201.75 - Step 6: Final answer
x = 584,894.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.