Finding the Fourth Proportional to 440,909,744.51, 661,378,940.95 and 129,991,287.71
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Solution
The fourth proportional to 440,909,744.51, 661,378,940.95 and 129,991,287.71 is: 194,991,154.70
Step by Step Solution
- Step 1: Write the proportion equation
440,909,744.51 : 661,378,940.95 = 129,991,287.71 : x - Step 2: Convert to fraction form
440,909,744.51/661,378,940.95 = 129,991,287.71/x - Step 3: Cross multiply
440,909,744.51x = 661,378,940.95 × 129,991,287.71 - Step 4: Simplify right side
440,909,744.51x = 85,973,500,198,366,560 - Step 5: Solve for x
x = 85,973,500,198,366,560/440,909,744.51 - Step 6: Final answer
x = 194,991,154.70
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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.