Finding the Fourth Proportional to 691,148.45, 1,036,722.68 and 292,239.65
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Solution
The fourth proportional to 691,148.45, 1,036,722.68 and 292,239.65 is: 438,359.48
Step by Step Solution
- Step 1: Write the proportion equation
691,148.45 : 1,036,722.68 = 292,239.65 : x - Step 2: Convert to fraction form
691,148.45/1,036,722.68 = 292,239.65/x - Step 3: Cross multiply
691,148.45x = 1,036,722.68 × 292,239.65 - Step 4: Simplify right side
691,148.45x = 302,971,473,150.26 - Step 5: Solve for x
x = 302,971,473,150.26/691,148.45 - Step 6: Final answer
x = 438,359.48
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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.