Finding the Fourth Proportional to 678,621.36, 936,539.68 and 376,817.52
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Solution
The fourth proportional to 678,621.36, 936,539.68 and 376,817.52 is: 520,031.61
Step by Step Solution
- Step 1: Write the proportion equation
678,621.36 : 936,539.68 = 376,817.52 : x - Step 2: Convert to fraction form
678,621.36/936,539.68 = 376,817.52/x - Step 3: Cross multiply
678,621.36x = 936,539.68 × 376,817.52 - Step 4: Simplify right side
678,621.36x = 352,904,559,599.19 - Step 5: Solve for x
x = 352,904,559,599.19/678,621.36 - Step 6: Final answer
x = 520,031.61
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1.5x scale
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.