Finding the Fourth Proportional to 426,000,918.60, 638,497,493.10 and 221,423,689.80
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Solution
The fourth proportional to 426,000,918.60, 638,497,493.10 and 221,423,689.80 is: 331,873,629.09
Step by Step Solution
- Step 1: Write the proportion equation
426,000,918.60 : 638,497,493.10 = 221,423,689.80 : x - Step 2: Convert to fraction form
426,000,918.60/638,497,493.10 = 221,423,689.80/x - Step 3: Cross multiply
426,000,918.60x = 638,497,493.10 × 221,423,689.80 - Step 4: Simplify right side
426,000,918.60x = 141,378,470,850,252,048 - Step 5: Solve for x
x = 141,378,470,850,252,048/426,000,918.60 - Step 6: Final answer
x = 331,873,629.09
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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.