Finding the Fourth Proportional to 720,296,939.40, 993,626,342.73 and 438,125,683.29
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Solution
The fourth proportional to 720,296,939.40, 993,626,342.73 and 438,125,683.29 is: 604,380,216.73
Step by Step Solution
- Step 1: Write the proportion equation
720,296,939.40 : 993,626,342.73 = 438,125,683.29 : x - Step 2: Convert to fraction form
720,296,939.40/993,626,342.73 = 438,125,683.29/x - Step 3: Cross multiply
720,296,939.40x = 993,626,342.73 × 438,125,683.29 - Step 4: Simplify right side
720,296,939.40x = 435,333,220,343,524,992 - Step 5: Solve for x
x = 435,333,220,343,524,992/720,296,939.40 - Step 6: Final answer
x = 604,380,216.73
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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.