Finding the Fourth Proportional to 513,743,324.99, 708,966,245.72 and 278,793,986.11
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Solution
The fourth proportional to 513,743,324.99, 708,966,245.72 and 278,793,986.11 is: 384,735,948.96
Step by Step Solution
- Step 1: Write the proportion equation
513,743,324.99 : 708,966,245.72 = 278,793,986.11 : x - Step 2: Convert to fraction form
513,743,324.99/708,966,245.72 = 278,793,986.11/x - Step 3: Cross multiply
513,743,324.99x = 708,966,245.72 × 278,793,986.11 - Step 4: Simplify right side
513,743,324.99x = 197,655,525,661,720,544 - Step 5: Solve for x
x = 197,655,525,661,720,544/513,743,324.99 - Step 6: Final answer
x = 384,735,948.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.