Finding the Fourth Proportional to 1,096,879,782.15, 1,513,694,116.22 and 626,991,282.63
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Solution
The fourth proportional to 1,096,879,782.15, 1,513,694,116.22 and 626,991,282.63 is: 865,247,979.66
Step by Step Solution
- Step 1: Write the proportion equation
1,096,879,782.15 : 1,513,694,116.22 = 626,991,282.63 : x - Step 2: Convert to fraction form
1,096,879,782.15/1,513,694,116.22 = 626,991,282.63/x - Step 3: Cross multiply
1,096,879,782.15x = 1,513,694,116.22 × 626,991,282.63 - Step 4: Simplify right side
1,096,879,782.15x = 949,073,015,435,127,040 - Step 5: Solve for x
x = 949,073,015,435,127,040/1,096,879,782.15 - Step 6: Final answer
x = 865,247,979.66
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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.