Finding the Fourth Proportional to 1,605,684,955.97, 2,215,665,519.86 and 891,250,625.68
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Solution
The fourth proportional to 1,605,684,955.97, 2,215,665,519.86 and 891,250,625.68 is: 1,229,826,108.49
Step by Step Solution
- Step 1: Write the proportion equation
1,605,684,955.97 : 2,215,665,519.86 = 891,250,625.68 : x - Step 2: Convert to fraction form
1,605,684,955.97/2,215,665,519.86 = 891,250,625.68/x - Step 3: Cross multiply
1,605,684,955.97x = 2,215,665,519.86 × 891,250,625.68 - Step 4: Simplify right side
1,605,684,955.97x = 1,974,713,280,869,516,544 - Step 5: Solve for x
x = 1,974,713,280,869,516,544/1,605,684,955.97 - Step 6: Final answer
x = 1,229,826,108.49
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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.