Finding the Fourth Proportional to 651,962,917.80, 977,991,615.90 and 392,619,709.80
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Solution
The fourth proportional to 651,962,917.80, 977,991,615.90 and 392,619,709.80 is: 588,958,012.70
Step by Step Solution
- Step 1: Write the proportion equation
651,962,917.80 : 977,991,615.90 = 392,619,709.80 : x - Step 2: Convert to fraction form
651,962,917.80/977,991,615.90 = 392,619,709.80/x - Step 3: Cross multiply
651,962,917.80x = 977,991,615.90 × 392,619,709.80 - Step 4: Simplify right side
651,962,917.80x = 383,978,784,421,491,072 - Step 5: Solve for x
x = 383,978,784,421,491,072/651,962,917.80 - Step 6: Final answer
x = 588,958,012.70
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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.