Finding the Fourth Proportional to 1,197,792,235.20, 1,796,688,352.80 and 290,053,099.20
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Solution
The fourth proportional to 1,197,792,235.20, 1,796,688,352.80 and 290,053,099.20 is: 435,079,648.80
Step by Step Solution
- Step 1: Write the proportion equation
1,197,792,235.20 : 1,796,688,352.80 = 290,053,099.20 : x - Step 2: Convert to fraction form
1,197,792,235.20/1,796,688,352.80 = 290,053,099.20/x - Step 3: Cross multiply
1,197,792,235.20x = 1,796,688,352.80 × 290,053,099.20 - Step 4: Simplify right side
1,197,792,235.20x = 521,135,025,026,182,976 - Step 5: Solve for x
x = 521,135,025,026,182,976/1,197,792,235.20 - Step 6: Final answer
x = 435,079,648.80
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Double scale
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Similar ratio
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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.