Finding the Fourth Proportional to 817,684.80, 1,128,403.36 and 459,988.80
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Solution
The fourth proportional to 817,684.80, 1,128,403.36 and 459,988.80 is: 634,783.61
Step by Step Solution
- Step 1: Write the proportion equation
817,684.80 : 1,128,403.36 = 459,988.80 : x - Step 2: Convert to fraction form
817,684.80/1,128,403.36 = 459,988.80/x - Step 3: Cross multiply
817,684.80x = 1,128,403.36 × 459,988.80 - Step 4: Simplify right side
817,684.80x = 519,052,907,482.37 - Step 5: Solve for x
x = 519,052,907,482.37/817,684.80 - Step 6: Final answer
x = 634,783.61
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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.