Finding the Fourth Proportional to 818,615.62, 1,228,089.51 and 257,519.62
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Solution
The fourth proportional to 818,615.62, 1,228,089.51 and 257,519.62 is: 386,331.68
Step by Step Solution
- Step 1: Write the proportion equation
818,615.62 : 1,228,089.51 = 257,519.62 : x - Step 2: Convert to fraction form
818,615.62/1,228,089.51 = 257,519.62/x - Step 3: Cross multiply
818,615.62x = 1,228,089.51 × 257,519.62 - Step 4: Simplify right side
818,615.62x = 316,257,143,941.19 - Step 5: Solve for x
x = 316,257,143,941.19/818,615.62 - Step 6: Final answer
x = 386,331.68
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1.5x scale
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.