Finding the Fourth Proportional to 430,313,354.40, 642,113,838.60 and 383,936,422.08
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Solution
The fourth proportional to 430,313,354.40, 642,113,838.60 and 383,936,422.08 is: 572,910,153.12
Step by Step Solution
- Step 1: Write the proportion equation
430,313,354.40 : 642,113,838.60 = 383,936,422.08 : x - Step 2: Convert to fraction form
430,313,354.40/642,113,838.60 = 383,936,422.08/x - Step 3: Cross multiply
430,313,354.40x = 642,113,838.60 × 383,936,422.08 - Step 4: Simplify right side
430,313,354.40x = 246,530,889,760,138,592 - Step 5: Solve for x
x = 246,530,889,760,138,592/430,313,354.40 - Step 6: Final answer
x = 572,910,153.12
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.