Finding the Fourth Proportional to 10,259,477.20, 15,368,220.60 and 5,213,630.80
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Solution
The fourth proportional to 10,259,477.20, 15,368,220.60 and 5,213,630.80 is: 7,809,776.92
Step by Step Solution
- Step 1: Write the proportion equation
10,259,477.20 : 15,368,220.60 = 5,213,630.80 : x - Step 2: Convert to fraction form
10,259,477.20/15,368,220.60 = 5,213,630.80/x - Step 3: Cross multiply
10,259,477.20x = 15,368,220.60 × 5,213,630.80 - Step 4: Simplify right side
10,259,477.20x = 80,124,228,261,354.47 - Step 5: Solve for x
x = 80,124,228,261,354.47/10,259,477.20 - Step 6: Final answer
x = 7,809,776.92
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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.