Finding the Fourth Proportional to 431,682,785.20, 647,524,177.80 and 402,772,394.80
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Solution
The fourth proportional to 431,682,785.20, 647,524,177.80 and 402,772,394.80 is: 604,158,592.20
Step by Step Solution
- Step 1: Write the proportion equation
431,682,785.20 : 647,524,177.80 = 402,772,394.80 : x - Step 2: Convert to fraction form
431,682,785.20/647,524,177.80 = 402,772,394.80/x - Step 3: Cross multiply
431,682,785.20x = 647,524,177.80 × 402,772,394.80 - Step 4: Simplify right side
431,682,785.20x = 260,804,863,783,406,976 - Step 5: Solve for x
x = 260,804,863,783,406,976/431,682,785.20 - Step 6: Final answer
x = 604,158,592.20
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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.