Finding the Fourth Proportional to 1,272,068.64, 1,755,475.20 and 728,202.24
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Solution
The fourth proportional to 1,272,068.64, 1,755,475.20 and 728,202.24 is: 1,004,930.81
Step by Step Solution
- Step 1: Write the proportion equation
1,272,068.64 : 1,755,475.20 = 728,202.24 : x - Step 2: Convert to fraction form
1,272,068.64/1,755,475.20 = 728,202.24/x - Step 3: Cross multiply
1,272,068.64x = 1,755,475.20 × 728,202.24 - Step 4: Simplify right side
1,272,068.64x = 1,278,340,972,904.45 - Step 5: Solve for x
x = 1,278,340,972,904.45/1,272,068.64 - Step 6: Final answer
x = 1,004,930.81
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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.