Finding the Fourth Proportional to 1,247,621,305,866.40, 1,721,716,096,306.80 and 698,916,473,215.40
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Solution
The fourth proportional to 1,247,621,305,866.40, 1,721,716,096,306.80 and 698,916,473,215.40 is: 964,504,001,535.38
Step by Step Solution
- Step 1: Write the proportion equation
1,247,621,305,866.40 : 1,721,716,096,306.80 = 698,916,473,215.40 : x - Step 2: Convert to fraction form
1,247,621,305,866.40/1,721,716,096,306.80 = 698,916,473,215.40/x - Step 3: Cross multiply
1,247,621,305,866.40x = 1,721,716,096,306.80 × 698,916,473,215.40 - Step 4: Simplify right side
1,247,621,305,866.40x = 1,203,335,741,908,934,662,815,744 - Step 5: Solve for x
x = 1,203,335,741,908,934,662,815,744/1,247,621,305,866.40 - Step 6: Final answer
x = 964,504,001,535.38
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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.