Finding the Fourth Proportional to 1,280,827,495.62, 1,767,543,455.97 and 694,116,631.62
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Solution
The fourth proportional to 1,280,827,495.62, 1,767,543,455.97 and 694,116,631.62 is: 957,881,771.04
Step by Step Solution
- Step 1: Write the proportion equation
1,280,827,495.62 : 1,767,543,455.97 = 694,116,631.62 : x - Step 2: Convert to fraction form
1,280,827,495.62/1,767,543,455.97 = 694,116,631.62/x - Step 3: Cross multiply
1,280,827,495.62x = 1,767,543,455.97 × 694,116,631.62 - Step 4: Simplify right side
1,280,827,495.62x = 1,226,881,309,899,870,208 - Step 5: Solve for x
x = 1,226,881,309,899,870,208/1,280,827,495.62 - Step 6: Final answer
x = 957,881,771.04
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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.