Finding the Fourth Proportional to 1,272,353.63, 1,755,851.65 and 728,497.76
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Solution
The fourth proportional to 1,272,353.63, 1,755,851.65 and 728,497.76 is: 1,005,328.99
Step by Step Solution
- Step 1: Write the proportion equation
1,272,353.63 : 1,755,851.65 = 728,497.76 : x - Step 2: Convert to fraction form
1,272,353.63/1,755,851.65 = 728,497.76/x - Step 3: Cross multiply
1,272,353.63x = 1,755,851.65 × 728,497.76 - Step 4: Simplify right side
1,272,353.63x = 1,279,133,983,316.80 - Step 5: Solve for x
x = 1,279,133,983,316.80/1,272,353.63 - Step 6: Final answer
x = 1,005,328.99
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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.