Finding the Fourth Proportional to 5,173,742.16, 7,139,838.15 and 2,968,964.28
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Solution
The fourth proportional to 5,173,742.16, 7,139,838.15 and 2,968,964.28 is: 4,097,213.15
Step by Step Solution
- Step 1: Write the proportion equation
5,173,742.16 : 7,139,838.15 = 2,968,964.28 : x - Step 2: Convert to fraction form
5,173,742.16/7,139,838.15 = 2,968,964.28/x - Step 3: Cross multiply
5,173,742.16x = 7,139,838.15 × 2,968,964.28 - Step 4: Simplify right side
5,173,742.16x = 21,197,924,432,331.28 - Step 5: Solve for x
x = 21,197,924,432,331.28/5,173,742.16 - Step 6: Final answer
x = 4,097,213.15
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.