Finding the Fourth Proportional to 1,387,534,080.81, 1,914,620,508.99 and 792,857,113.05
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Solution
The fourth proportional to 1,387,534,080.81, 1,914,620,508.99 and 792,857,113.05 is: 1,094,041,948.47
Step by Step Solution
- Step 1: Write the proportion equation
1,387,534,080.81 : 1,914,620,508.99 = 792,857,113.05 : x - Step 2: Convert to fraction form
1,387,534,080.81/1,914,620,508.99 = 792,857,113.05/x - Step 3: Cross multiply
1,387,534,080.81x = 1,914,620,508.99 × 792,857,113.05 - Step 4: Simplify right side
1,387,534,080.81x = 1,518,020,489,344,132,864 - Step 5: Solve for x
x = 1,518,020,489,344,132,864/1,387,534,080.81 - Step 6: Final answer
x = 1,094,041,948.47
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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.