Finding the Fourth Proportional to 721,352,674.97, 995,382,710.48 and 403,830,307.95
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Solution
The fourth proportional to 721,352,674.97, 995,382,710.48 and 403,830,307.95 is: 557,238,810.43
Step by Step Solution
- Step 1: Write the proportion equation
721,352,674.97 : 995,382,710.48 = 403,830,307.95 : x - Step 2: Convert to fraction form
721,352,674.97/995,382,710.48 = 403,830,307.95/x - Step 3: Cross multiply
721,352,674.97x = 995,382,710.48 × 403,830,307.95 - Step 4: Simplify right side
721,352,674.97x = 401,965,706,499,224,960 - Step 5: Solve for x
x = 401,965,706,499,224,960/721,352,674.97 - Step 6: Final answer
x = 557,238,810.43
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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.