Finding the Fourth Proportional to 647,539.80, 971,309.70 and 629,107.80
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Solution
The fourth proportional to 647,539.80, 971,309.70 and 629,107.80 is: 943,661.70
Step by Step Solution
- Step 1: Write the proportion equation
647,539.80 : 971,309.70 = 629,107.80 : x - Step 2: Convert to fraction form
647,539.80/971,309.70 = 629,107.80/x - Step 3: Cross multiply
647,539.80x = 971,309.70 × 629,107.80 - Step 4: Simplify right side
647,539.80x = 611,058,508,485.66 - Step 5: Solve for x
x = 611,058,508,485.66/647,539.80 - Step 6: Final answer
x = 943,661.70
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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.