Finding the Fourth Proportional to 420,838.31, 579,533.65 and 365,622.09
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Solution
The fourth proportional to 420,838.31, 579,533.65 and 365,622.09 is: 503,495.76
Step by Step Solution
- Step 1: Write the proportion equation
420,838.31 : 579,533.65 = 365,622.09 : x - Step 2: Convert to fraction form
420,838.31/579,533.65 = 365,622.09/x - Step 3: Cross multiply
420,838.31x = 579,533.65 × 365,622.09 - Step 4: Simplify right side
420,838.31x = 211,890,303,996.74 - Step 5: Solve for x
x = 211,890,303,996.74/420,838.31 - Step 6: Final answer
x = 503,495.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.