Finding the Fourth Proportional to 5,186,731.12, 7,779,987.90 and 1,728,721.12
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Solution
The fourth proportional to 5,186,731.12, 7,779,987.90 and 1,728,721.12 is: 2,593,045.42
Step by Step Solution
- Step 1: Write the proportion equation
5,186,731.12 : 7,779,987.90 = 1,728,721.12 : x - Step 2: Convert to fraction form
5,186,731.12/7,779,987.90 = 1,728,721.12/x - Step 3: Cross multiply
5,186,731.12x = 7,779,987.90 × 1,728,721.12 - Step 4: Simplify right side
5,186,731.12x = 13,449,429,396,074.45 - Step 5: Solve for x
x = 13,449,429,396,074.45/5,186,731.12 - Step 6: Final answer
x = 2,593,045.42
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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.