Finding the Fourth Proportional to 1,731,508,878.51, 2,389,418,235.84 and 938,537,831.85
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Solution
The fourth proportional to 1,731,508,878.51, 2,389,418,235.84 and 938,537,831.85 is: 1,295,147,508.79
Step by Step Solution
- Step 1: Write the proportion equation
1,731,508,878.51 : 2,389,418,235.84 = 938,537,831.85 : x - Step 2: Convert to fraction form
1,731,508,878.51/2,389,418,235.84 = 938,537,831.85/x - Step 3: Cross multiply
1,731,508,878.51x = 2,389,418,235.84 × 938,537,831.85 - Step 4: Simplify right side
1,731,508,878.51x = 2,242,559,410,448,125,696 - Step 5: Solve for x
x = 2,242,559,410,448,125,696/1,731,508,878.51 - Step 6: Final answer
x = 1,295,147,508.79
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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.