Finding the Fourth Proportional to 752,780.19, 1,038,837.68 and 408,615.90
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Solution
The fourth proportional to 752,780.19, 1,038,837.68 and 408,615.90 is: 563,890.49
Step by Step Solution
- Step 1: Write the proportion equation
752,780.19 : 1,038,837.68 = 408,615.90 : x - Step 2: Convert to fraction form
752,780.19/1,038,837.68 = 408,615.90/x - Step 3: Cross multiply
752,780.19x = 1,038,837.68 × 408,615.90 - Step 4: Simplify right side
752,780.19x = 424,485,591,524.03 - Step 5: Solve for x
x = 424,485,591,524.03/752,780.19 - Step 6: Final answer
x = 563,890.49
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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.