Finding the Fourth Proportional to 720,739.77, 994,544.78 and 398,397.84
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Solution
The fourth proportional to 720,739.77, 994,544.78 and 398,397.84 is: 549,746.95
Step by Step Solution
- Step 1: Write the proportion equation
720,739.77 : 994,544.78 = 398,397.84 : x - Step 2: Convert to fraction form
720,739.77/994,544.78 = 398,397.84/x - Step 3: Cross multiply
720,739.77x = 994,544.78 × 398,397.84 - Step 4: Simplify right side
720,739.77x = 396,224,490,143.29 - Step 5: Solve for x
x = 396,224,490,143.29/720,739.77 - Step 6: Final answer
x = 549,746.95
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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.