Finding the Fourth Proportional to 1,490,815,331.97, 2,057,417,202.97 and 821,758,867.82
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Solution
The fourth proportional to 1,490,815,331.97, 2,057,417,202.97 and 821,758,867.82 is: 1,134,077,974.04
Step by Step Solution
- Step 1: Write the proportion equation
1,490,815,331.97 : 2,057,417,202.97 = 821,758,867.82 : x - Step 2: Convert to fraction form
1,490,815,331.97/2,057,417,202.97 = 821,758,867.82/x - Step 3: Cross multiply
1,490,815,331.97x = 2,057,417,202.97 × 821,758,867.82 - Step 4: Simplify right side
1,490,815,331.97x = 1,690,700,831,344,514,816 - Step 5: Solve for x
x = 1,690,700,831,344,514,816/1,490,815,331.97 - Step 6: Final answer
x = 1,134,077,974.04
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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.