Finding the Fourth Proportional to 879,659.70, 1,319,489.55 and 381,995.70
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Solution
The fourth proportional to 879,659.70, 1,319,489.55 and 381,995.70 is: 572,993.55
Step by Step Solution
- Step 1: Write the proportion equation
879,659.70 : 1,319,489.55 = 381,995.70 : x - Step 2: Convert to fraction form
879,659.70/1,319,489.55 = 381,995.70/x - Step 3: Cross multiply
879,659.70x = 1,319,489.55 × 381,995.70 - Step 4: Simplify right side
879,659.70x = 504,039,334,294.94 - Step 5: Solve for x
x = 504,039,334,294.94/879,659.70 - Step 6: Final answer
x = 572,993.55
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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.