Finding the Fourth Proportional to 1,101,420.83, 1,519,986.95 and 618,021.74
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Solution
The fourth proportional to 1,101,420.83, 1,519,986.95 and 618,021.74 is: 852,884.70
Step by Step Solution
- Step 1: Write the proportion equation
1,101,420.83 : 1,519,986.95 = 618,021.74 : x - Step 2: Convert to fraction form
1,101,420.83/1,519,986.95 = 618,021.74/x - Step 3: Cross multiply
1,101,420.83x = 1,519,986.95 × 618,021.74 - Step 4: Simplify right side
1,101,420.83x = 939,384,973,561.41 - Step 5: Solve for x
x = 939,384,973,561.41/1,101,420.83 - Step 6: Final answer
x = 852,884.70
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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.