Finding the Fourth Proportional to 1,685,661.12, 2,528,493.84 and 688,389.12
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Solution
The fourth proportional to 1,685,661.12, 2,528,493.84 and 688,389.12 is: 1,032,584.56
Step by Step Solution
- Step 1: Write the proportion equation
1,685,661.12 : 2,528,493.84 = 688,389.12 : x - Step 2: Convert to fraction form
1,685,661.12/2,528,493.84 = 688,389.12/x - Step 3: Cross multiply
1,685,661.12x = 2,528,493.84 × 688,389.12 - Step 4: Simplify right side
1,685,661.12x = 1,740,587,649,443.02 - Step 5: Solve for x
x = 1,740,587,649,443.02/1,685,661.12 - Step 6: Final answer
x = 1,032,584.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.