Finding the Fourth Proportional to 721,758,119.13, 995,855,487.84 and 408,492,323.91
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Solution
The fourth proportional to 721,758,119.13, 995,855,487.84 and 408,492,323.91 is: 563,622,786.81
Step by Step Solution
- Step 1: Write the proportion equation
721,758,119.13 : 995,855,487.84 = 408,492,323.91 : x - Step 2: Convert to fraction form
721,758,119.13/995,855,487.84 = 408,492,323.91/x - Step 3: Cross multiply
721,758,119.13x = 995,855,487.84 × 408,492,323.91 - Step 4: Simplify right side
721,758,119.13x = 406,799,322,506,288,384 - Step 5: Solve for x
x = 406,799,322,506,288,384/721,758,119.13 - Step 6: Final answer
x = 563,622,786.81
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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.