Finding the Fourth Proportional to 870,988.10, 1,201,963.58 and 489,023.09
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Solution
The fourth proportional to 870,988.10, 1,201,963.58 and 489,023.09 is: 674,851.86
Step by Step Solution
- Step 1: Write the proportion equation
870,988.10 : 1,201,963.58 = 489,023.09 : x - Step 2: Convert to fraction form
870,988.10/1,201,963.58 = 489,023.09/x - Step 3: Cross multiply
870,988.10x = 1,201,963.58 × 489,023.09 - Step 4: Simplify right side
870,988.10x = 587,787,939,171.80 - Step 5: Solve for x
x = 587,787,939,171.80/870,988.10 - Step 6: Final answer
x = 674,851.86
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.