Finding the Fourth Proportional to 19,879,050.40, 29,818,575.60 and 8,520,647.20
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Solution
The fourth proportional to 19,879,050.40, 29,818,575.60 and 8,520,647.20 is: 12,780,970.80
Step by Step Solution
- Step 1: Write the proportion equation
19,879,050.40 : 29,818,575.60 = 8,520,647.20 : x - Step 2: Convert to fraction form
19,879,050.40/29,818,575.60 = 8,520,647.20/x - Step 3: Cross multiply
19,879,050.40x = 29,818,575.60 × 8,520,647.20 - Step 4: Simplify right side
19,879,050.40x = 254,073,562,694,128.31 - Step 5: Solve for x
x = 254,073,562,694,128.31/19,879,050.40 - Step 6: Final answer
x = 12,780,970.80
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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.