Finding the Fourth Proportional to 775,815.99, 1,070,605.69 and 431,652.66
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Solution
The fourth proportional to 775,815.99, 1,070,605.69 and 431,652.66 is: 595,669.33
Step by Step Solution
- Step 1: Write the proportion equation
775,815.99 : 1,070,605.69 = 431,652.66 : x - Step 2: Convert to fraction form
775,815.99/1,070,605.69 = 431,652.66/x - Step 3: Cross multiply
775,815.99x = 1,070,605.69 × 431,652.66 - Step 4: Simplify right side
775,815.99x = 462,129,788,805.73 - Step 5: Solve for x
x = 462,129,788,805.73/775,815.99 - Step 6: Final answer
x = 595,669.33
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1.5x scale
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.