Finding the Fourth Proportional to 403,568.06, 557,137.64 and 312,720.08
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Solution
The fourth proportional to 403,568.06, 557,137.64 and 312,720.08 is: 431,719.32
Step by Step Solution
- Step 1: Write the proportion equation
403,568.06 : 557,137.64 = 312,720.08 : x - Step 2: Convert to fraction form
403,568.06/557,137.64 = 312,720.08/x - Step 3: Cross multiply
403,568.06x = 557,137.64 × 312,720.08 - Step 4: Simplify right side
403,568.06x = 174,228,125,347.92 - Step 5: Solve for x
x = 174,228,125,347.92/403,568.06 - Step 6: Final answer
x = 431,719.32
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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.