Finding the Fourth Proportional to 1,221,440,998,062.10, 1,685,665,128,386.10 and 672,732,193,885
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Solution
The fourth proportional to 1,221,440,998,062.10, 1,685,665,128,386.10 and 672,732,193,885 is: 928,412,589,534.65
Step by Step Solution
- Step 1: Write the proportion equation
1,221,440,998,062.10 : 1,685,665,128,386.10 = 672,732,193,885 : x - Step 2: Convert to fraction form
1,221,440,998,062.10/1,685,665,128,386.10 = 672,732,193,885/x - Step 3: Cross multiply
1,221,440,998,062.10x = 1,685,665,128,386.10 × 672,732,193,885 - Step 4: Simplify right side
1,221,440,998,062.10x = 1,134,001,199,974,621,252,681,728 - Step 5: Solve for x
x = 1,134,001,199,974,621,252,681,728/1,221,440,998,062.10 - Step 6: Final answer
x = 928,412,589,534.65
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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.