Finding the Fourth Proportional to 633,911,115.75, 874,426,717.76 and 398,589,215.91
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Solution
The fourth proportional to 633,911,115.75, 874,426,717.76 and 398,589,215.91 is: 549,820,079.09
Step by Step Solution
- Step 1: Write the proportion equation
633,911,115.75 : 874,426,717.76 = 398,589,215.91 : x - Step 2: Convert to fraction form
633,911,115.75/874,426,717.76 = 398,589,215.91/x - Step 3: Cross multiply
633,911,115.75x = 874,426,717.76 × 398,589,215.91 - Step 4: Simplify right side
633,911,115.75x = 348,537,059,800,720,320 - Step 5: Solve for x
x = 348,537,059,800,720,320/633,911,115.75 - Step 6: Final answer
x = 549,820,079.09
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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.