Finding the Fourth Proportional to 991,420.97, 1,368,192.97 and 561,691.87
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Solution
The fourth proportional to 991,420.97, 1,368,192.97 and 561,691.87 is: 775,152.93
Step by Step Solution
- Step 1: Write the proportion equation
991,420.97 : 1,368,192.97 = 561,691.87 : x - Step 2: Convert to fraction form
991,420.97/1,368,192.97 = 561,691.87/x - Step 3: Cross multiply
991,420.97x = 1,368,192.97 × 561,691.87 - Step 4: Simplify right side
991,420.97x = 768,502,865,121.79 - Step 5: Solve for x
x = 768,502,865,121.79/991,420.97 - Step 6: Final answer
x = 775,152.93
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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.