Finding the Fourth Proportional to 1,129,742,574.40, 1,694,613,861.60 and 402,468,846.40
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Solution
The fourth proportional to 1,129,742,574.40, 1,694,613,861.60 and 402,468,846.40 is: 603,703,269.60
Step by Step Solution
- Step 1: Write the proportion equation
1,129,742,574.40 : 1,694,613,861.60 = 402,468,846.40 : x - Step 2: Convert to fraction form
1,129,742,574.40/1,694,613,861.60 = 402,468,846.40/x - Step 3: Cross multiply
1,129,742,574.40x = 1,694,613,861.60 × 402,468,846.40 - Step 4: Simplify right side
1,129,742,574.40x = 682,029,285,971,601,152 - Step 5: Solve for x
x = 682,029,285,971,601,152/1,129,742,574.40 - Step 6: Final answer
x = 603,703,269.60
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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.