Finding the Fourth Proportional to 712,177,400.80, 1,068,266,101.20 and 647,554,175.20
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Solution
The fourth proportional to 712,177,400.80, 1,068,266,101.20 and 647,554,175.20 is: 971,331,262.80
Step by Step Solution
- Step 1: Write the proportion equation
712,177,400.80 : 1,068,266,101.20 = 647,554,175.20 : x - Step 2: Convert to fraction form
712,177,400.80/1,068,266,101.20 = 647,554,175.20/x - Step 3: Cross multiply
712,177,400.80x = 1,068,266,101.20 × 647,554,175.20 - Step 4: Simplify right side
712,177,400.80x = 691,760,174,056,685,824 - Step 5: Solve for x
x = 691,760,174,056,685,824/712,177,400.80 - Step 6: Final answer
x = 971,331,262.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.