Finding the Fourth Proportional to 479,131,685.97, 661,203,718.57 and 259,115,111.97
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Solution
The fourth proportional to 479,131,685.97, 661,203,718.57 and 259,115,111.97 is: 357,579,931.76
Step by Step Solution
- Step 1: Write the proportion equation
479,131,685.97 : 661,203,718.57 = 259,115,111.97 : x - Step 2: Convert to fraction form
479,131,685.97/661,203,718.57 = 259,115,111.97/x - Step 3: Cross multiply
479,131,685.97x = 661,203,718.57 × 259,115,111.97 - Step 4: Simplify right side
479,131,685.97x = 171,327,875,572,245,920 - Step 5: Solve for x
x = 171,327,875,572,245,920/479,131,685.97 - Step 6: Final answer
x = 357,579,931.76
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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.