Finding the Fourth Proportional to 1,315,732.68, 1,972,009.56 and 640,802.64
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Solution
The fourth proportional to 1,315,732.68, 1,972,009.56 and 640,802.64 is: 960,429.84
Step by Step Solution
- Step 1: Write the proportion equation
1,315,732.68 : 1,972,009.56 = 640,802.64 : x - Step 2: Convert to fraction form
1,315,732.68/1,972,009.56 = 640,802.64/x - Step 3: Cross multiply
1,315,732.68x = 1,972,009.56 × 640,802.64 - Step 4: Simplify right side
1,315,732.68x = 1,263,668,932,153.24 - Step 5: Solve for x
x = 1,263,668,932,153.24/1,315,732.68 - Step 6: Final answer
x = 960,429.84
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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.