Finding the Fourth Proportional to 1,053,128,884.15, 1,452,618,079.99 and 677,260,678.63
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Solution
The fourth proportional to 1,053,128,884.15, 1,452,618,079.99 and 677,260,678.63 is: 934,169,712.23
Step by Step Solution
- Step 1: Write the proportion equation
1,053,128,884.15 : 1,452,618,079.99 = 677,260,678.63 : x - Step 2: Convert to fraction form
1,053,128,884.15/1,452,618,079.99 = 677,260,678.63/x - Step 3: Cross multiply
1,053,128,884.15x = 1,452,618,079.99 × 677,260,678.63 - Step 4: Simplify right side
1,053,128,884.15x = 983,801,106,640,848,640 - Step 5: Solve for x
x = 983,801,106,640,848,640/1,053,128,884.15 - Step 6: Final answer
x = 934,169,712.23
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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.