Finding the Fourth Proportional to 426,000,917.60, 638,497,491.60 and 221,423,688.80
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Solution
The fourth proportional to 426,000,917.60, 638,497,491.60 and 221,423,688.80 is: 331,873,627.59
Step by Step Solution
- Step 1: Write the proportion equation
426,000,917.60 : 638,497,491.60 = 221,423,688.80 : x - Step 2: Convert to fraction form
426,000,917.60/638,497,491.60 = 221,423,688.80/x - Step 3: Cross multiply
426,000,917.60x = 638,497,491.60 × 221,423,688.80 - Step 4: Simplify right side
426,000,917.60x = 141,378,469,879,619,024 - Step 5: Solve for x
x = 141,378,469,879,619,024/426,000,917.60 - Step 6: Final answer
x = 331,873,627.59
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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.