Finding the Fourth Proportional to 607,394,826.20, 912,545,724.92 and 389,472,128.12
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Solution
The fourth proportional to 607,394,826.20, 912,545,724.92 and 389,472,128.12 is: 585,140,192.44
Step by Step Solution
- Step 1: Write the proportion equation
607,394,826.20 : 912,545,724.92 = 389,472,128.12 : x - Step 2: Convert to fraction form
607,394,826.20/912,545,724.92 = 389,472,128.12/x - Step 3: Cross multiply
607,394,826.20x = 912,545,724.92 × 389,472,128.12 - Step 4: Simplify right side
607,394,826.20x = 355,411,125,491,400,512 - Step 5: Solve for x
x = 355,411,125,491,400,512/607,394,826.20 - Step 6: Final answer
x = 585,140,192.44
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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.