Finding the Fourth Proportional to 991,317.18, 1,486,977.19 and 243,363.18
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Solution
The fourth proportional to 991,317.18, 1,486,977.19 and 243,363.18 is: 365,045.12
Step by Step Solution
- Step 1: Write the proportion equation
991,317.18 : 1,486,977.19 = 243,363.18 : x - Step 2: Convert to fraction form
991,317.18/1,486,977.19 = 243,363.18/x - Step 3: Cross multiply
991,317.18x = 1,486,977.19 × 243,363.18 - Step 4: Simplify right side
991,317.18x = 361,875,496,937.46 - Step 5: Solve for x
x = 361,875,496,937.46/991,317.18 - Step 6: Final answer
x = 365,045.12
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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.