Finding the Fourth Proportional to 3,941,128,490.55, 5,438,771,730.99 and 2,132,640,375.99
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Solution
The fourth proportional to 3,941,128,490.55, 5,438,771,730.99 and 2,132,640,375.99 is: 2,943,051,518.65
Step by Step Solution
- Step 1: Write the proportion equation
3,941,128,490.55 : 5,438,771,730.99 = 2,132,640,375.99 : x - Step 2: Convert to fraction form
3,941,128,490.55/5,438,771,730.99 = 2,132,640,375.99/x - Step 3: Cross multiply
3,941,128,490.55x = 5,438,771,730.99 × 2,132,640,375.99 - Step 4: Simplify right side
3,941,128,490.55x = 11,598,944,189,302,296,576 - Step 5: Solve for x
x = 11,598,944,189,302,296,576/3,941,128,490.55 - Step 6: Final answer
x = 2,943,051,518.65
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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.