Finding the Fourth Proportional to 8,669,243.35, 12,985,769.30 and 5,199,980.68
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Solution
The fourth proportional to 8,669,243.35, 12,985,769.30 and 5,199,980.68 is: 7,789,116.85
Step by Step Solution
- Step 1: Write the proportion equation
8,669,243.35 : 12,985,769.30 = 5,199,980.68 : x - Step 2: Convert to fraction form
8,669,243.35/12,985,769.30 = 5,199,980.68/x - Step 3: Cross multiply
8,669,243.35x = 12,985,769.30 × 5,199,980.68 - Step 4: Simplify right side
8,669,243.35x = 67,525,749,448,937.22 - Step 5: Solve for x
x = 67,525,749,448,937.22/8,669,243.35 - Step 6: Final answer
x = 7,789,116.85
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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.