Finding the Fourth Proportional to 1,539,373,751.19, 2,124,253,960.20 and 870,278,792.13
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Solution
The fourth proportional to 1,539,373,751.19, 2,124,253,960.20 and 870,278,792.13 is: 1,200,938,478.54
Step by Step Solution
- Step 1: Write the proportion equation
1,539,373,751.19 : 2,124,253,960.20 = 870,278,792.13 : x - Step 2: Convert to fraction form
1,539,373,751.19/2,124,253,960.20 = 870,278,792.13/x - Step 3: Cross multiply
1,539,373,751.19x = 2,124,253,960.20 × 870,278,792.13 - Step 4: Simplify right side
1,539,373,751.19x = 1,848,693,170,660,225,024 - Step 5: Solve for x
x = 1,848,693,170,660,225,024/1,539,373,751.19 - Step 6: Final answer
x = 1,200,938,478.54
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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.