Finding the Fourth Proportional to 991,072.06, 1,486,829.64 and 317,193.76
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Solution
The fourth proportional to 991,072.06, 1,486,829.64 and 317,193.76 is: 475,861.55
Step by Step Solution
- Step 1: Write the proportion equation
991,072.06 : 1,486,829.64 = 317,193.76 : x - Step 2: Convert to fraction form
991,072.06/1,486,829.64 = 317,193.76/x - Step 3: Cross multiply
991,072.06x = 1,486,829.64 × 317,193.76 - Step 4: Simplify right side
991,072.06x = 471,613,083,991.05 - Step 5: Solve for x
x = 471,613,083,991.05/991,072.06 - Step 6: Final answer
x = 475,861.55
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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.