Finding the Fourth Proportional to 664,633.05, 917,197.34 and 378,153.13
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Solution
The fourth proportional to 664,633.05, 917,197.34 and 378,153.13 is: 521,853.44
Step by Step Solution
- Step 1: Write the proportion equation
664,633.05 : 917,197.34 = 378,153.13 : x - Step 2: Convert to fraction form
664,633.05/917,197.34 = 378,153.13/x - Step 3: Cross multiply
664,633.05x = 917,197.34 × 378,153.13 - Step 4: Simplify right side
664,633.05x = 346,841,044,948.67 - Step 5: Solve for x
x = 346,841,044,948.67/664,633.05 - Step 6: Final answer
x = 521,853.44
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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.