Finding the Fourth Proportional to 487,454,150.70, 672,686,727.99 and 278,614,777.44
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Solution
The fourth proportional to 487,454,150.70, 672,686,727.99 and 278,614,777.44 is: 384,488,392.88
Step by Step Solution
- Step 1: Write the proportion equation
487,454,150.70 : 672,686,727.99 = 278,614,777.44 : x - Step 2: Convert to fraction form
487,454,150.70/672,686,727.99 = 278,614,777.44/x - Step 3: Cross multiply
487,454,150.70x = 672,686,727.99 × 278,614,777.44 - Step 4: Simplify right side
487,454,150.70x = 187,420,463,005,775,680 - Step 5: Solve for x
x = 187,420,463,005,775,680/487,454,150.70 - Step 6: Final answer
x = 384,488,392.88
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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.