Finding the Fourth Proportional to 1,115,381.54, 1,539,101.52 and 631,843.13
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Solution
The fourth proportional to 1,115,381.54, 1,539,101.52 and 631,843.13 is: 871,872.71
Step by Step Solution
- Step 1: Write the proportion equation
1,115,381.54 : 1,539,101.52 = 631,843.13 : x - Step 2: Convert to fraction form
1,115,381.54/1,539,101.52 = 631,843.13/x - Step 3: Cross multiply
1,115,381.54x = 1,539,101.52 × 631,843.13 - Step 4: Simplify right side
1,115,381.54x = 972,470,725,632.31 - Step 5: Solve for x
x = 972,470,725,632.31/1,115,381.54 - Step 6: Final answer
x = 871,872.71
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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.