Finding the Fourth Proportional to 709,748.80, 979,455.84 and 387,466.08
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Solution
The fourth proportional to 709,748.80, 979,455.84 and 387,466.08 is: 534,704.55
Step by Step Solution
- Step 1: Write the proportion equation
709,748.80 : 979,455.84 = 387,466.08 : x - Step 2: Convert to fraction form
709,748.80/979,455.84 = 387,466.08/x - Step 3: Cross multiply
709,748.80x = 979,455.84 × 387,466.08 - Step 4: Simplify right side
709,748.80x = 379,505,914,857.91 - Step 5: Solve for x
x = 379,505,914,857.91/709,748.80 - Step 6: Final answer
x = 534,704.55
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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.