Finding the Fourth Proportional to 687,495.63, 948,729.70 and 381,554.07
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Solution
The fourth proportional to 687,495.63, 948,729.70 and 381,554.07 is: 526,536.70
Step by Step Solution
- Step 1: Write the proportion equation
687,495.63 : 948,729.70 = 381,554.07 : x - Step 2: Convert to fraction form
687,495.63/948,729.70 = 381,554.07/x - Step 3: Cross multiply
687,495.63x = 948,729.70 × 381,554.07 - Step 4: Simplify right side
687,495.63x = 361,991,678,364.88 - Step 5: Solve for x
x = 361,991,678,364.88/687,495.63 - Step 6: Final answer
x = 526,536.70
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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.