Finding the Fourth Proportional to 877,675.40, 1,211,208.09 and 495,630.80
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Solution
The fourth proportional to 877,675.40, 1,211,208.09 and 495,630.80 is: 683,979.56
Step by Step Solution
- Step 1: Write the proportion equation
877,675.40 : 1,211,208.09 = 495,630.80 : x - Step 2: Convert to fraction form
877,675.40/1,211,208.09 = 495,630.80/x - Step 3: Cross multiply
877,675.40x = 1,211,208.09 × 495,630.80 - Step 4: Simplify right side
877,675.40x = 600,312,034,613.17 - Step 5: Solve for x
x = 600,312,034,613.17/877,675.40 - Step 6: Final answer
x = 683,979.56
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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.