Finding the Fourth Proportional to 1,387,166.88, 1,913,523.84 and 1,129,321.20
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Solution
The fourth proportional to 1,387,166.88, 1,913,523.84 and 1,129,321.20 is: 1,557,839.27
Step by Step Solution
- Step 1: Write the proportion equation
1,387,166.88 : 1,913,523.84 = 1,129,321.20 : x - Step 2: Convert to fraction form
1,387,166.88/1,913,523.84 = 1,129,321.20/x - Step 3: Cross multiply
1,387,166.88x = 1,913,523.84 × 1,129,321.20 - Step 4: Simplify right side
1,387,166.88x = 2,160,983,039,217.41 - Step 5: Solve for x
x = 2,160,983,039,217.41/1,387,166.88 - Step 6: Final answer
x = 1,557,839.27
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.