Finding the Fourth Proportional to 874,675.84, 1,207,089.42 and 487,491.44
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Solution
The fourth proportional to 874,675.84, 1,207,089.42 and 487,491.44 is: 672,758.68
Step by Step Solution
- Step 1: Write the proportion equation
874,675.84 : 1,207,089.42 = 487,491.44 : x - Step 2: Convert to fraction form
874,675.84/1,207,089.42 = 487,491.44/x - Step 3: Cross multiply
874,675.84x = 1,207,089.42 × 487,491.44 - Step 4: Simplify right side
874,675.84x = 588,445,759,564.57 - Step 5: Solve for x
x = 588,445,759,564.57/874,675.84 - Step 6: Final answer
x = 672,758.68
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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.