Finding the Fourth Proportional to 991,269.10, 1,486,905.05 and 243,315.10
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Solution
The fourth proportional to 991,269.10, 1,486,905.05 and 243,315.10 is: 364,972.99
Step by Step Solution
- Step 1: Write the proportion equation
991,269.10 : 1,486,905.05 = 243,315.10 : x - Step 2: Convert to fraction form
991,269.10/1,486,905.05 = 243,315.10/x - Step 3: Cross multiply
991,269.10x = 1,486,905.05 × 243,315.10 - Step 4: Simplify right side
991,269.10x = 361,786,450,931.26 - Step 5: Solve for x
x = 361,786,450,931.26/991,269.10 - Step 6: Final answer
x = 364,972.99
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Double scale
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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.