Finding the Fourth Proportional to 991,765.80, 1,487,648.70 and 317,845.80
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Solution
The fourth proportional to 991,765.80, 1,487,648.70 and 317,845.80 is: 476,768.70
Step by Step Solution
- Step 1: Write the proportion equation
991,765.80 : 1,487,648.70 = 317,845.80 : x - Step 2: Convert to fraction form
991,765.80/1,487,648.70 = 317,845.80/x - Step 3: Cross multiply
991,765.80x = 1,487,648.70 × 317,845.80 - Step 4: Simplify right side
991,765.80x = 472,842,891,170.46 - Step 5: Solve for x
x = 472,842,891,170.46/991,765.80 - Step 6: Final answer
x = 476,768.70
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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.