Finding the Fourth Proportional to 1,115,389.02, 1,539,111.92 and 631,850.62
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Solution
The fourth proportional to 1,115,389.02, 1,539,111.92 and 631,850.62 is: 871,883.09
Step by Step Solution
- Step 1: Write the proportion equation
1,115,389.02 : 1,539,111.92 = 631,850.62 : x - Step 2: Convert to fraction form
1,115,389.02/1,539,111.92 = 631,850.62/x - Step 3: Cross multiply
1,115,389.02x = 1,539,111.92 × 631,850.62 - Step 4: Simplify right side
1,115,389.02x = 972,488,820,901.39 - Step 5: Solve for x
x = 972,488,820,901.39/1,115,389.02 - Step 6: Final answer
x = 871,883.09
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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.