Finding the Fourth Proportional to 641,129.80, 961,694.70 and 611,605.30
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Solution
The fourth proportional to 641,129.80, 961,694.70 and 611,605.30 is: 917,407.95
Step by Step Solution
- Step 1: Write the proportion equation
641,129.80 : 961,694.70 = 611,605.30 : x - Step 2: Convert to fraction form
641,129.80/961,694.70 = 611,605.30/x - Step 3: Cross multiply
641,129.80x = 961,694.70 × 611,605.30 - Step 4: Simplify right side
641,129.80x = 588,177,575,501.91 - Step 5: Solve for x
x = 588,177,575,501.91/641,129.80 - Step 6: Final answer
x = 917,407.95
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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.