Finding the Fourth Proportional to 665,606,364.87, 918,830,993.69 and 397,776,708.41
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Solution
The fourth proportional to 665,606,364.87, 918,830,993.69 and 397,776,708.41 is: 549,107,682.17
Step by Step Solution
- Step 1: Write the proportion equation
665,606,364.87 : 918,830,993.69 = 397,776,708.41 : x - Step 2: Convert to fraction form
665,606,364.87/918,830,993.69 = 397,776,708.41/x - Step 3: Cross multiply
665,606,364.87x = 918,830,993.69 × 397,776,708.41 - Step 4: Simplify right side
665,606,364.87x = 365,489,568,248,514,624 - Step 5: Solve for x
x = 365,489,568,248,514,624/665,606,364.87 - Step 6: Final answer
x = 549,107,682.17
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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.