Finding the Fourth Proportional to 1,940,229,319.80, 2,910,368,862.90 and 647,764,807.80
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Solution
The fourth proportional to 1,940,229,319.80, 2,910,368,862.90 and 647,764,807.80 is: 971,655,519.20
Step by Step Solution
- Step 1: Write the proportion equation
1,940,229,319.80 : 2,910,368,862.90 = 647,764,807.80 : x - Step 2: Convert to fraction form
1,940,229,319.80/2,910,368,862.90 = 647,764,807.80/x - Step 3: Cross multiply
1,940,229,319.80x = 2,910,368,862.90 × 647,764,807.80 - Step 4: Simplify right side
1,940,229,319.80x = 1,885,234,527,103,523,072 - Step 5: Solve for x
x = 1,885,234,527,103,523,072/1,940,229,319.80 - Step 6: Final answer
x = 971,655,519.20
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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.