Finding the Fourth Proportional to 1,125,890.18, 1,689,722.84 and 416,121.20
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Solution
The fourth proportional to 1,125,890.18, 1,689,722.84 and 416,121.20 is: 624,509.84
Step by Step Solution
- Step 1: Write the proportion equation
1,125,890.18 : 1,689,722.84 = 416,121.20 : x - Step 2: Convert to fraction form
1,125,890.18/1,689,722.84 = 416,121.20/x - Step 3: Cross multiply
1,125,890.18x = 1,689,722.84 × 416,121.20 - Step 4: Simplify right side
1,125,890.18x = 703,129,495,848.21 - Step 5: Solve for x
x = 703,129,495,848.21/1,125,890.18 - Step 6: Final answer
x = 624,509.84
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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.