Finding the Fourth Proportional to 448,860.16, 618,866.76 and 287,449.84
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Solution
The fourth proportional to 448,860.16, 618,866.76 and 287,449.84 is: 396,321.99
Step by Step Solution
- Step 1: Write the proportion equation
448,860.16 : 618,866.76 = 287,449.84 : x - Step 2: Convert to fraction form
448,860.16/618,866.76 = 287,449.84/x - Step 3: Cross multiply
448,860.16x = 618,866.76 × 287,449.84 - Step 4: Simplify right side
448,860.16x = 177,893,151,143.32 - Step 5: Solve for x
x = 177,893,151,143.32/448,860.16 - Step 6: Final answer
x = 396,321.99
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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.