Finding the Fourth Proportional to 1,442,450,821.71, 2,163,124,687.20 and 787,051,540.62
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Solution
The fourth proportional to 1,442,450,821.71, 2,163,124,687.20 and 787,051,540.62 is: 1,180,276,368.52
Step by Step Solution
- Step 1: Write the proportion equation
1,442,450,821.71 : 2,163,124,687.20 = 787,051,540.62 : x - Step 2: Convert to fraction form
1,442,450,821.71/2,163,124,687.20 = 787,051,540.62/x - Step 3: Cross multiply
1,442,450,821.71x = 2,163,124,687.20 × 787,051,540.62 - Step 4: Simplify right side
1,442,450,821.71x = 1,702,490,617,613,915,392 - Step 5: Solve for x
x = 1,702,490,617,613,915,392/1,442,450,821.71 - Step 6: Final answer
x = 1,180,276,368.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.