Finding the Fourth Proportional to 991,325.97, 1,368,025.07 and 561,605.07
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Solution
The fourth proportional to 991,325.97, 1,368,025.07 and 561,605.07 is: 775,012.30
Step by Step Solution
- Step 1: Write the proportion equation
991,325.97 : 1,368,025.07 = 561,605.07 : x - Step 2: Convert to fraction form
991,325.97/1,368,025.07 = 561,605.07/x - Step 3: Cross multiply
991,325.97x = 1,368,025.07 × 561,605.07 - Step 4: Simplify right side
991,325.97x = 768,289,817,521.17 - Step 5: Solve for x
x = 768,289,817,521.17/991,325.97 - Step 6: Final answer
x = 775,012.30
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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.