Finding the Fourth Proportional to 991,417.96, 1,368,154.12 and 538,708.96
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Solution
The fourth proportional to 991,417.96, 1,368,154.12 and 538,708.96 is: 743,416.92
Step by Step Solution
- Step 1: Write the proportion equation
991,417.96 : 1,368,154.12 = 538,708.96 : x - Step 2: Convert to fraction form
991,417.96/1,368,154.12 = 538,708.96/x - Step 3: Cross multiply
991,417.96x = 1,368,154.12 × 538,708.96 - Step 4: Simplify right side
991,417.96x = 737,036,883,104.92 - Step 5: Solve for x
x = 737,036,883,104.92/991,417.96 - Step 6: Final answer
x = 743,416.92
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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.