Finding the Fourth Proportional to 442,918.70, 618,686.50 and 442,918.70
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Solution
The fourth proportional to 442,918.70, 618,686.50 and 442,918.70 is: 618,686.50
Step by Step Solution
- Step 1: Write the proportion equation
442,918.70 : 618,686.50 = 442,918.70 : x - Step 2: Convert to fraction form
442,918.70/618,686.50 = 442,918.70/x - Step 3: Cross multiply
442,918.70x = 618,686.50 × 442,918.70 - Step 4: Simplify right side
442,918.70x = 274,027,820,287.55 - Step 5: Solve for x
x = 274,027,820,287.55/442,918.70 - Step 6: Final answer
x = 618,686.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.