Finding the Fourth Proportional to 1,993,318,219.80, 2,989,977,329.70 and 957,929,434.20
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Solution
The fourth proportional to 1,993,318,219.80, 2,989,977,329.70 and 957,929,434.20 is: 1,436,894,151.30
Step by Step Solution
- Step 1: Write the proportion equation
1,993,318,219.80 : 2,989,977,329.70 = 957,929,434.20 : x - Step 2: Convert to fraction form
1,993,318,219.80/2,989,977,329.70 = 957,929,434.20/x - Step 3: Cross multiply
1,993,318,219.80x = 2,989,977,329.70 × 957,929,434.20 - Step 4: Simplify right side
1,993,318,219.80x = 2,864,187,291,710,347,776 - Step 5: Solve for x
x = 2,864,187,291,710,347,776/1,993,318,219.80 - Step 6: Final answer
x = 1,436,894,151.30
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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.