Finding the Fourth Proportional to 716,306.90, 988,536.76 and 394,011.14
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Solution
The fourth proportional to 716,306.90, 988,536.76 and 394,011.14 is: 543,753.65
Step by Step Solution
- Step 1: Write the proportion equation
716,306.90 : 988,536.76 = 394,011.14 : x - Step 2: Convert to fraction form
716,306.90/988,536.76 = 394,011.14/x - Step 3: Cross multiply
716,306.90x = 988,536.76 × 394,011.14 - Step 4: Simplify right side
716,306.90x = 389,494,489,811.80 - Step 5: Solve for x
x = 389,494,489,811.80/716,306.90 - Step 6: Final answer
x = 543,753.65
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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.