Finding the Fourth Proportional to 7,920,819.12, 10,930,702.68 and 4,299,147.12
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Solution
The fourth proportional to 7,920,819.12, 10,930,702.68 and 4,299,147.12 is: 5,932,807.99
Step by Step Solution
- Step 1: Write the proportion equation
7,920,819.12 : 10,930,702.68 = 4,299,147.12 : x - Step 2: Convert to fraction form
7,920,819.12/10,930,702.68 = 4,299,147.12/x - Step 3: Cross multiply
7,920,819.12x = 10,930,702.68 × 4,299,147.12 - Step 4: Simplify right side
7,920,819.12x = 46,992,698,946,298.28 - Step 5: Solve for x
x = 46,992,698,946,298.28/7,920,819.12 - Step 6: Final answer
x = 5,932,807.99
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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.