Finding the Fourth Proportional to 7,128,207.40, 10,692,311.10 and 2,579,247.40
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Solution
The fourth proportional to 7,128,207.40, 10,692,311.10 and 2,579,247.40 is: 3,868,871.10
Step by Step Solution
- Step 1: Write the proportion equation
7,128,207.40 : 10,692,311.10 = 2,579,247.40 : x - Step 2: Convert to fraction form
7,128,207.40/10,692,311.10 = 2,579,247.40/x - Step 3: Cross multiply
7,128,207.40x = 10,692,311.10 × 2,579,247.40 - Step 4: Simplify right side
7,128,207.40x = 27,578,115,604,666.14 - Step 5: Solve for x
x = 27,578,115,604,666.14/7,128,207.40 - Step 6: Final answer
x = 3,868,871.10
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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.