Finding the Fourth Proportional to 991,291.60, 1,486,937.40 and 940,115.80
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Solution
The fourth proportional to 991,291.60, 1,486,937.40 and 940,115.80 is: 1,410,173.70
Step by Step Solution
- Step 1: Write the proportion equation
991,291.60 : 1,486,937.40 = 940,115.80 : x - Step 2: Convert to fraction form
991,291.60/1,486,937.40 = 940,115.80/x - Step 3: Cross multiply
991,291.60x = 1,486,937.40 × 940,115.80 - Step 4: Simplify right side
991,291.60x = 1,397,893,343,350.92 - Step 5: Solve for x
x = 1,397,893,343,350.92/991,291.60 - Step 6: Final answer
x = 1,410,173.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.