Finding the Fourth Proportional to 721,352,679.84, 995,382,717.21 and 403,830,312.81
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Solution
The fourth proportional to 721,352,679.84, 995,382,717.21 and 403,830,312.81 is: 557,238,817.14
Step by Step Solution
- Step 1: Write the proportion equation
721,352,679.84 : 995,382,717.21 = 403,830,312.81 : x - Step 2: Convert to fraction form
721,352,679.84/995,382,717.21 = 403,830,312.81/x - Step 3: Cross multiply
721,352,679.84x = 995,382,717.21 × 403,830,312.81 - Step 4: Simplify right side
721,352,679.84x = 401,965,714,056,582,080 - Step 5: Solve for x
x = 401,965,714,056,582,080/721,352,679.84 - Step 6: Final answer
x = 557,238,817.14
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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.