Finding the Fourth Proportional to 804,742.80, 1,207,114.20 and 272,281.20
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Solution
The fourth proportional to 804,742.80, 1,207,114.20 and 272,281.20 is: 408,421.80
Step by Step Solution
- Step 1: Write the proportion equation
804,742.80 : 1,207,114.20 = 272,281.20 : x - Step 2: Convert to fraction form
804,742.80/1,207,114.20 = 272,281.20/x - Step 3: Cross multiply
804,742.80x = 1,207,114.20 × 272,281.20 - Step 4: Simplify right side
804,742.80x = 328,674,502,913.04 - Step 5: Solve for x
x = 328,674,502,913.04/804,742.80 - Step 6: Final answer
x = 408,421.80
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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.