Finding the Fourth Proportional to 1,489,964,478.98, 2,055,826,703.13 and 903,397,782.02
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Solution
The fourth proportional to 1,489,964,478.98, 2,055,826,703.13 and 903,397,782.02 is: 1,246,492,322.49
Step by Step Solution
- Step 1: Write the proportion equation
1,489,964,478.98 : 2,055,826,703.13 = 903,397,782.02 : x - Step 2: Convert to fraction form
1,489,964,478.98/2,055,826,703.13 = 903,397,782.02/x - Step 3: Cross multiply
1,489,964,478.98x = 2,055,826,703.13 × 903,397,782.02 - Step 4: Simplify right side
1,489,964,478.98x = 1,857,229,283,825,131,008 - Step 5: Solve for x
x = 1,857,229,283,825,131,008/1,489,964,478.98 - Step 6: Final answer
x = 1,246,492,322.49
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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.