Finding the Fourth Proportional to 5,158,515.20, 7,737,772.80 and 1,612,659.20
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Solution
The fourth proportional to 5,158,515.20, 7,737,772.80 and 1,612,659.20 is: 2,418,988.80
Step by Step Solution
- Step 1: Write the proportion equation
5,158,515.20 : 7,737,772.80 = 1,612,659.20 : x - Step 2: Convert to fraction form
5,158,515.20/7,737,772.80 = 1,612,659.20/x - Step 3: Cross multiply
5,158,515.20x = 7,737,772.80 × 1,612,659.20 - Step 4: Simplify right side
5,158,515.20x = 12,478,390,493,429.76 - Step 5: Solve for x
x = 12,478,390,493,429.76/5,158,515.20 - Step 6: Final answer
x = 2,418,988.80
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1.5x scale
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.