Finding the Fourth Proportional to 1,990,477,267.20, 2,983,526,179.20 and 697,347,129.60
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Solution
The fourth proportional to 1,990,477,267.20, 2,983,526,179.20 and 697,347,129.60 is: 1,045,253,543.68
Step by Step Solution
- Step 1: Write the proportion equation
1,990,477,267.20 : 2,983,526,179.20 = 697,347,129.60 : x - Step 2: Convert to fraction form
1,990,477,267.20/2,983,526,179.20 = 697,347,129.60/x - Step 3: Cross multiply
1,990,477,267.20x = 2,983,526,179.20 × 697,347,129.60 - Step 4: Simplify right side
1,990,477,267.20x = 2,080,553,417,151,575,040 - Step 5: Solve for x
x = 2,080,553,417,151,575,040/1,990,477,267.20 - Step 6: Final answer
x = 1,045,253,543.68
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.