Finding the Fourth Proportional to 4,972,245,612.72, 6,861,699,617.40 and 2,744,578,221.36
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Solution
The fourth proportional to 4,972,245,612.72, 6,861,699,617.40 and 2,744,578,221.36 is: 3,787,518,316.32
Step by Step Solution
- Step 1: Write the proportion equation
4,972,245,612.72 : 6,861,699,617.40 = 2,744,578,221.36 : x - Step 2: Convert to fraction form
4,972,245,612.72/6,861,699,617.40 = 2,744,578,221.36/x - Step 3: Cross multiply
4,972,245,612.72x = 6,861,699,617.40 × 2,744,578,221.36 - Step 4: Simplify right side
4,972,245,612.72x = 18,832,471,331,430,285,312 - Step 5: Solve for x
x = 18,832,471,331,430,285,312/4,972,245,612.72 - Step 6: Final answer
x = 3,787,518,316.32
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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.