Finding the Fourth Proportional to 991,269.09, 1,486,905.06 and 243,315.09
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Solution
The fourth proportional to 991,269.09, 1,486,905.06 and 243,315.09 is: 364,972.98
Step by Step Solution
- Step 1: Write the proportion equation
991,269.09 : 1,486,905.06 = 243,315.09 : x - Step 2: Convert to fraction form
991,269.09/1,486,905.06 = 243,315.09/x - Step 3: Cross multiply
991,269.09x = 1,486,905.06 × 243,315.09 - Step 4: Simplify right side
991,269.09x = 361,786,438,495.36 - Step 5: Solve for x
x = 361,786,438,495.36/991,269.09 - Step 6: Final answer
x = 364,972.98
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1.5x scale
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.