Finding the Fourth Proportional to 1,107,449.34, 1,528,617.88 and 642,420.74
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Solution
The fourth proportional to 1,107,449.34, 1,528,617.88 and 642,420.74 is: 886,736.57
Step by Step Solution
- Step 1: Write the proportion equation
1,107,449.34 : 1,528,617.88 = 642,420.74 : x - Step 2: Convert to fraction form
1,107,449.34/1,528,617.88 = 642,420.74/x - Step 3: Cross multiply
1,107,449.34x = 1,528,617.88 × 642,420.74 - Step 4: Simplify right side
1,107,449.34x = 982,015,829,646.83 - Step 5: Solve for x
x = 982,015,829,646.83/1,107,449.34 - Step 6: Final answer
x = 886,736.57
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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.