Finding the Fourth Proportional to 572,785.49, 790,356.20 and 331,021.41
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Solution
The fourth proportional to 572,785.49, 790,356.20 and 331,021.41 is: 456,758.82
Step by Step Solution
- Step 1: Write the proportion equation
572,785.49 : 790,356.20 = 331,021.41 : x - Step 2: Convert to fraction form
572,785.49/790,356.20 = 331,021.41/x - Step 3: Cross multiply
572,785.49x = 790,356.20 × 331,021.41 - Step 4: Simplify right side
572,785.49x = 261,624,822,071.14 - Step 5: Solve for x
x = 261,624,822,071.14/572,785.49 - Step 6: Final answer
x = 456,758.82
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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.