Finding the Fourth Proportional to 1,138,428.70, 1,709,611.35 and 606,987.70
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Solution
The fourth proportional to 1,138,428.70, 1,709,611.35 and 606,987.70 is: 911,531.01
Step by Step Solution
- Step 1: Write the proportion equation
1,138,428.70 : 1,709,611.35 = 606,987.70 : x - Step 2: Convert to fraction form
1,138,428.70/1,709,611.35 = 606,987.70/x - Step 3: Cross multiply
1,138,428.70x = 1,709,611.35 × 606,987.70 - Step 4: Simplify right side
1,138,428.70x = 1,037,713,061,230.40 - Step 5: Solve for x
x = 1,037,713,061,230.40/1,138,428.70 - Step 6: Final answer
x = 911,531.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.