Finding the Fourth Proportional to 1,992,029,497.60, 2,988,044,246.40 and 611,841,791.20
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Solution
The fourth proportional to 1,992,029,497.60, 2,988,044,246.40 and 611,841,791.20 is: 917,762,686.80
Step by Step Solution
- Step 1: Write the proportion equation
1,992,029,497.60 : 2,988,044,246.40 = 611,841,791.20 : x - Step 2: Convert to fraction form
1,992,029,497.60/2,988,044,246.40 = 611,841,791.20/x - Step 3: Cross multiply
1,992,029,497.60x = 2,988,044,246.40 × 611,841,791.20 - Step 4: Simplify right side
1,992,029,497.60x = 1,828,210,343,902,230,272 - Step 5: Solve for x
x = 1,828,210,343,902,230,272/1,992,029,497.60 - Step 6: Final answer
x = 917,762,686.80
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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.