Finding the Fourth Proportional to 2,079,813,149.12, 3,119,719,534.41 and 915,281,640.38
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Solution
The fourth proportional to 2,079,813,149.12, 3,119,719,534.41 and 915,281,640.38 is: 1,372,922,377.28
Step by Step Solution
- Step 1: Write the proportion equation
2,079,813,149.12 : 3,119,719,534.41 = 915,281,640.38 : x - Step 2: Convert to fraction form
2,079,813,149.12/3,119,719,534.41 = 915,281,640.38/x - Step 3: Cross multiply
2,079,813,149.12x = 3,119,719,534.41 × 915,281,640.38 - Step 4: Simplify right side
2,079,813,149.12x = 2,855,422,012,980,314,624 - Step 5: Solve for x
x = 2,855,422,012,980,314,624/2,079,813,149.12 - Step 6: Final answer
x = 1,372,922,377.28
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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.