Finding the Fourth Proportional to 1,587,438.21, 2,190,704.24 and 862,285.71
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Solution
The fourth proportional to 1,587,438.21, 2,190,704.24 and 862,285.71 is: 1,189,975.74
Step by Step Solution
- Step 1: Write the proportion equation
1,587,438.21 : 2,190,704.24 = 862,285.71 : x - Step 2: Convert to fraction form
1,587,438.21/2,190,704.24 = 862,285.71/x - Step 3: Cross multiply
1,587,438.21x = 2,190,704.24 × 862,285.71 - Step 4: Simplify right side
1,587,438.21x = 1,889,012,960,988.41 - Step 5: Solve for x
x = 1,889,012,960,988.41/1,587,438.21 - Step 6: Final answer
x = 1,189,975.74
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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.