Finding the Fourth Proportional to 526,464,879.21, 726,512,660.91 and 291,510,493.79
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Solution
The fourth proportional to 526,464,879.21, 726,512,660.91 and 291,510,493.79 is: 402,279,568.66
Step by Step Solution
- Step 1: Write the proportion equation
526,464,879.21 : 726,512,660.91 = 291,510,493.79 : x - Step 2: Convert to fraction form
526,464,879.21/726,512,660.91 = 291,510,493.79/x - Step 3: Cross multiply
526,464,879.21x = 726,512,660.91 × 291,510,493.79 - Step 4: Simplify right side
526,464,879.21x = 211,786,064,522,928,384 - Step 5: Solve for x
x = 211,786,064,522,928,384/526,464,879.21 - Step 6: Final answer
x = 402,279,568.66
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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.