Finding the Fourth Proportional to 687,486.12, 948,716.58 and 381,544.74
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Solution
The fourth proportional to 687,486.12, 948,716.58 and 381,544.74 is: 526,523.82
Step by Step Solution
- Step 1: Write the proportion equation
687,486.12 : 948,716.58 = 381,544.74 : x - Step 2: Convert to fraction form
687,486.12/948,716.58 = 381,544.74/x - Step 3: Cross multiply
687,486.12x = 948,716.58 × 381,544.74 - Step 4: Simplify right side
687,486.12x = 361,977,820,849.79 - Step 5: Solve for x
x = 361,977,820,849.79/687,486.12 - Step 6: Final answer
x = 526,523.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.