Finding the Fourth Proportional to 707,315,453.20, 1,059,800,253.43 and 430,128,195.09
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Solution
The fourth proportional to 707,315,453.20, 1,059,800,253.43 and 430,128,195.09 is: 644,479,020.08
Step by Step Solution
- Step 1: Write the proportion equation
707,315,453.20 : 1,059,800,253.43 = 430,128,195.09 : x - Step 2: Convert to fraction form
707,315,453.20/1,059,800,253.43 = 430,128,195.09/x - Step 3: Cross multiply
707,315,453.20x = 1,059,800,253.43 × 430,128,195.09 - Step 4: Simplify right side
707,315,453.20x = 455,849,970,163,770,432 - Step 5: Solve for x
x = 455,849,970,163,770,432/707,315,453.20 - Step 6: Final answer
x = 644,479,020.08
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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.