Finding the Fourth Proportional to 2,186,389.70, 3,280,966.95 and 1,287,829.70
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Solution
The fourth proportional to 2,186,389.70, 3,280,966.95 and 1,287,829.70 is: 1,932,558.81
Step by Step Solution
- Step 1: Write the proportion equation
2,186,389.70 : 3,280,966.95 = 1,287,829.70 : x - Step 2: Convert to fraction form
2,186,389.70/3,280,966.95 = 1,287,829.70/x - Step 3: Cross multiply
2,186,389.70x = 3,280,966.95 × 1,287,829.70 - Step 4: Simplify right side
2,186,389.70x = 4,225,326,682,928.42 - Step 5: Solve for x
x = 4,225,326,682,928.42/2,186,389.70 - Step 6: Final answer
x = 1,932,558.81
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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.