Finding the Fourth Proportional to 5,184,135.20, 7,776,202.80 and 1,638,279.20
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Solution
The fourth proportional to 5,184,135.20, 7,776,202.80 and 1,638,279.20 is: 2,457,418.80
Step by Step Solution
- Step 1: Write the proportion equation
5,184,135.20 : 7,776,202.80 = 1,638,279.20 : x - Step 2: Convert to fraction form
5,184,135.20/7,776,202.80 = 1,638,279.20/x - Step 3: Cross multiply
5,184,135.20x = 7,776,202.80 × 1,638,279.20 - Step 4: Simplify right side
5,184,135.20x = 12,739,591,302,221.76 - Step 5: Solve for x
x = 12,739,591,302,221.76/5,184,135.20 - Step 6: Final answer
x = 2,457,418.80
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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.