Finding the Fourth Proportional to 874,730.45, 1,207,140.04 and 487,535.09
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Solution
The fourth proportional to 874,730.45, 1,207,140.04 and 487,535.09 is: 672,805.12
Step by Step Solution
- Step 1: Write the proportion equation
874,730.45 : 1,207,140.04 = 487,535.09 : x - Step 2: Convert to fraction form
874,730.45/1,207,140.04 = 487,535.09/x - Step 3: Cross multiply
874,730.45x = 1,207,140.04 × 487,535.09 - Step 4: Simplify right side
874,730.45x = 588,523,126,339.15 - Step 5: Solve for x
x = 588,523,126,339.15/874,730.45 - Step 6: Final answer
x = 672,805.12
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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.