Finding the Fourth Proportional to 878,876.40, 1,318,314.60 and 405,421.68
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Solution
The fourth proportional to 878,876.40, 1,318,314.60 and 405,421.68 is: 608,132.52
Step by Step Solution
- Step 1: Write the proportion equation
878,876.40 : 1,318,314.60 = 405,421.68 : x - Step 2: Convert to fraction form
878,876.40/1,318,314.60 = 405,421.68/x - Step 3: Cross multiply
878,876.40x = 1,318,314.60 × 405,421.68 - Step 4: Simplify right side
878,876.40x = 534,473,319,900.53 - Step 5: Solve for x
x = 534,473,319,900.53/878,876.40 - Step 6: Final answer
x = 608,132.52
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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.