Finding the Fourth Proportional to 415,313,139.70, 622,969,709.55 and 415,313,139.70
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Solution
The fourth proportional to 415,313,139.70, 622,969,709.55 and 415,313,139.70 is: 622,969,709.55
Step by Step Solution
- Step 1: Write the proportion equation
415,313,139.70 : 622,969,709.55 = 415,313,139.70 : x - Step 2: Convert to fraction form
415,313,139.70/622,969,709.55 = 415,313,139.70/x - Step 3: Cross multiply
415,313,139.70x = 622,969,709.55 × 415,313,139.70 - Step 4: Simplify right side
415,313,139.70x = 258,727,506,011,207,552 - Step 5: Solve for x
x = 258,727,506,011,207,552/415,313,139.70 - Step 6: Final answer
x = 622,969,709.55
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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.