Finding the Fourth Proportional to 8,271,762.20, 12,407,643.30 and 4,226,905.70
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Solution
The fourth proportional to 8,271,762.20, 12,407,643.30 and 4,226,905.70 is: 6,340,358.55
Step by Step Solution
- Step 1: Write the proportion equation
8,271,762.20 : 12,407,643.30 = 4,226,905.70 : x - Step 2: Convert to fraction form
8,271,762.20/12,407,643.30 = 4,226,905.70/x - Step 3: Cross multiply
8,271,762.20x = 12,407,643.30 × 4,226,905.70 - Step 4: Simplify right side
8,271,762.20x = 52,445,938,188,336.81 - Step 5: Solve for x
x = 52,445,938,188,336.81/8,271,762.20 - Step 6: Final answer
x = 6,340,358.55
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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.