Finding the Fourth Proportional to 6,474,421.80, 9,711,632.70 and 3,115,189.80
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Solution
The fourth proportional to 6,474,421.80, 9,711,632.70 and 3,115,189.80 is: 4,672,784.70
Step by Step Solution
- Step 1: Write the proportion equation
6,474,421.80 : 9,711,632.70 = 3,115,189.80 : x - Step 2: Convert to fraction form
6,474,421.80/9,711,632.70 = 3,115,189.80/x - Step 3: Cross multiply
6,474,421.80x = 9,711,632.70 × 3,115,189.80 - Step 4: Simplify right side
6,474,421.80x = 30,253,579,128,386.46 - Step 5: Solve for x
x = 30,253,579,128,386.46/6,474,421.80 - Step 6: Final answer
x = 4,672,784.70
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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.