Finding the Fourth Proportional to 665,442.10, 996,850.95 and 398,409.40
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Solution
The fourth proportional to 665,442.10, 996,850.95 and 398,409.40 is: 596,828.47
Step by Step Solution
- Step 1: Write the proportion equation
665,442.10 : 996,850.95 = 398,409.40 : x - Step 2: Convert to fraction form
665,442.10/996,850.95 = 398,409.40/x - Step 3: Cross multiply
665,442.10x = 996,850.95 × 398,409.40 - Step 4: Simplify right side
665,442.10x = 397,154,788,878.93 - Step 5: Solve for x
x = 397,154,788,878.93/665,442.10 - Step 6: Final answer
x = 596,828.47
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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.