Finding the Fourth Proportional to 913,115.80, 1,369,673.70 and 414,479.80
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Solution
The fourth proportional to 913,115.80, 1,369,673.70 and 414,479.80 is: 621,719.70
Step by Step Solution
- Step 1: Write the proportion equation
913,115.80 : 1,369,673.70 = 414,479.80 : x - Step 2: Convert to fraction form
913,115.80/1,369,673.70 = 414,479.80/x - Step 3: Cross multiply
913,115.80x = 1,369,673.70 × 414,479.80 - Step 4: Simplify right side
913,115.80x = 567,702,081,241.26 - Step 5: Solve for x
x = 567,702,081,241.26/913,115.80 - Step 6: Final answer
x = 621,719.70
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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.