Finding the Fourth Proportional to 812,885.55, 1,119,222.74 and 690,135.14
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Solution
The fourth proportional to 812,885.55, 1,119,222.74 and 690,135.14 is: 950,213.64
Step by Step Solution
- Step 1: Write the proportion equation
812,885.55 : 1,119,222.74 = 690,135.14 : x - Step 2: Convert to fraction form
812,885.55/1,119,222.74 = 690,135.14/x - Step 3: Cross multiply
812,885.55x = 1,119,222.74 × 690,135.14 - Step 4: Simplify right side
812,885.55x = 772,414,933,314.29 - Step 5: Solve for x
x = 772,414,933,314.29/812,885.55 - Step 6: Final answer
x = 950,213.64
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1.5x scale
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.