Finding the Fourth Proportional to 720,748.20, 994,394.80 and 462,769.68
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Solution
The fourth proportional to 720,748.20, 994,394.80 and 462,769.68 is: 638,469.53
Step by Step Solution
- Step 1: Write the proportion equation
720,748.20 : 994,394.80 = 462,769.68 : x - Step 2: Convert to fraction form
720,748.20/994,394.80 = 462,769.68/x - Step 3: Cross multiply
720,748.20x = 994,394.80 × 462,769.68 - Step 4: Simplify right side
720,748.20x = 460,175,763,389.66 - Step 5: Solve for x
x = 460,175,763,389.66/720,748.20 - Step 6: Final answer
x = 638,469.53
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1.5x scale
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.