Finding the Fourth Proportional to 1,272,406.74, 1,755,924.93 and 728,551.14
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Solution
The fourth proportional to 1,272,406.74, 1,755,924.93 and 728,551.14 is: 1,005,402.65
Step by Step Solution
- Step 1: Write the proportion equation
1,272,406.74 : 1,755,924.93 = 728,551.14 : x - Step 2: Convert to fraction form
1,272,406.74/1,755,924.93 = 728,551.14/x - Step 3: Cross multiply
1,272,406.74x = 1,755,924.93 × 728,551.14 - Step 4: Simplify right side
1,272,406.74x = 1,279,281,109,505.92 - Step 5: Solve for x
x = 1,279,281,109,505.92/1,272,406.74 - Step 6: Final answer
x = 1,005,402.65
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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.