Finding the Fourth Proportional to 720,103.80, 1,080,155.70 and 580,135.80
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Solution
The fourth proportional to 720,103.80, 1,080,155.70 and 580,135.80 is: 870,203.70
Step by Step Solution
- Step 1: Write the proportion equation
720,103.80 : 1,080,155.70 = 580,135.80 : x - Step 2: Convert to fraction form
720,103.80/1,080,155.70 = 580,135.80/x - Step 3: Cross multiply
720,103.80x = 1,080,155.70 × 580,135.80 - Step 4: Simplify right side
720,103.80x = 626,636,991,144.06 - Step 5: Solve for x
x = 626,636,991,144.06/720,103.80 - Step 6: Final answer
x = 870,203.70
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1.5x scale
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.