Finding the Fourth Proportional to 19,419,946.80, 29,129,920.20 and 6,639,313.20
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Solution
The fourth proportional to 19,419,946.80, 29,129,920.20 and 6,639,313.20 is: 9,958,969.80
Step by Step Solution
- Step 1: Write the proportion equation
19,419,946.80 : 29,129,920.20 = 6,639,313.20 : x - Step 2: Convert to fraction form
19,419,946.80/29,129,920.20 = 6,639,313.20/x - Step 3: Cross multiply
19,419,946.80x = 29,129,920.20 × 6,639,313.20 - Step 4: Simplify right side
19,419,946.80x = 193,402,663,698,806.62 - Step 5: Solve for x
x = 193,402,663,698,806.62/19,419,946.80 - Step 6: Final answer
x = 9,958,969.80
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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.