Finding the Fourth Proportional to 987,693.12, 1,363,019.40 and 534,984.12
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Solution
The fourth proportional to 987,693.12, 1,363,019.40 and 534,984.12 is: 738,279.65
Step by Step Solution
- Step 1: Write the proportion equation
987,693.12 : 1,363,019.40 = 534,984.12 : x - Step 2: Convert to fraction form
987,693.12/1,363,019.40 = 534,984.12/x - Step 3: Cross multiply
987,693.12x = 1,363,019.40 × 534,984.12 - Step 4: Simplify right side
987,693.12x = 729,193,734,251.93 - Step 5: Solve for x
x = 729,193,734,251.93/987,693.12 - Step 6: Final answer
x = 738,279.65
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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.