Finding the Fourth Proportional to 1,370,258,708.49, 1,890,952,249.64 and 743,727,134.79
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Solution
The fourth proportional to 1,370,258,708.49, 1,890,952,249.64 and 743,727,134.79 is: 1,026,340,858.07
Step by Step Solution
- Step 1: Write the proportion equation
1,370,258,708.49 : 1,890,952,249.64 = 743,727,134.79 : x - Step 2: Convert to fraction form
1,370,258,708.49/1,890,952,249.64 = 743,727,134.79/x - Step 3: Cross multiply
1,370,258,708.49x = 1,890,952,249.64 × 743,727,134.79 - Step 4: Simplify right side
1,370,258,708.49x = 1,406,352,498,649,462,016 - Step 5: Solve for x
x = 1,406,352,498,649,462,016/1,370,258,708.49 - Step 6: Final answer
x = 1,026,340,858.07
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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.