Finding the Fourth Proportional to 6,642,738.60, 9,964,107.90 and 4,249,285.80
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Solution
The fourth proportional to 6,642,738.60, 9,964,107.90 and 4,249,285.80 is: 6,373,928.70
Step by Step Solution
- Step 1: Write the proportion equation
6,642,738.60 : 9,964,107.90 = 4,249,285.80 : x - Step 2: Convert to fraction form
6,642,738.60/9,964,107.90 = 4,249,285.80/x - Step 3: Cross multiply
6,642,738.60x = 9,964,107.90 × 4,249,285.80 - Step 4: Simplify right side
6,642,738.60x = 42,340,342,209,137.82 - Step 5: Solve for x
x = 42,340,342,209,137.82/6,642,738.60 - Step 6: Final answer
x = 6,373,928.70
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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.