Finding the Fourth Proportional to 723,805,213.80, 1,085,707,820.70 and 417,695,197.80
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Solution
The fourth proportional to 723,805,213.80, 1,085,707,820.70 and 417,695,197.80 is: 626,542,796.70
Step by Step Solution
- Step 1: Write the proportion equation
723,805,213.80 : 1,085,707,820.70 = 417,695,197.80 : x - Step 2: Convert to fraction form
723,805,213.80/1,085,707,820.70 = 417,695,197.80/x - Step 3: Cross multiply
723,805,213.80x = 1,085,707,820.70 × 417,695,197.80 - Step 4: Simplify right side
723,805,213.80x = 453,494,942,920,293,440 - Step 5: Solve for x
x = 453,494,942,920,293,440/723,805,213.80 - Step 6: Final answer
x = 626,542,796.70
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Similar ratio
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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.