Finding the Fourth Proportional to 991,138.74, 1,486,647.96 and 351,474.12
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Solution
The fourth proportional to 991,138.74, 1,486,647.96 and 351,474.12 is: 527,189.85
Step by Step Solution
- Step 1: Write the proportion equation
991,138.74 : 1,486,647.96 = 351,474.12 : x - Step 2: Convert to fraction form
991,138.74/1,486,647.96 = 351,474.12/x - Step 3: Cross multiply
991,138.74x = 1,486,647.96 × 351,474.12 - Step 4: Simplify right side
991,138.74x = 522,518,283,490.80 - Step 5: Solve for x
x = 522,518,283,490.80/991,138.74 - Step 6: Final answer
x = 527,189.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.