Finding the Fourth Proportional to 817,608.38, 1,128,299.57 and 455,117.88
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Solution
The fourth proportional to 817,608.38, 1,128,299.57 and 455,117.88 is: 628,062.67
Step by Step Solution
- Step 1: Write the proportion equation
817,608.38 : 1,128,299.57 = 455,117.88 : x - Step 2: Convert to fraction form
817,608.38/1,128,299.57 = 455,117.88/x - Step 3: Cross multiply
817,608.38x = 1,128,299.57 × 455,117.88 - Step 4: Simplify right side
817,608.38x = 513,509,306,592.22 - Step 5: Solve for x
x = 513,509,306,592.22/817,608.38 - Step 6: Final answer
x = 628,062.67
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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.