Finding the Fourth Proportional to 1,629,645,609.21, 2,248,965,202.34 and 915,306,853.07
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Solution
The fourth proportional to 1,629,645,609.21, 2,248,965,202.34 and 915,306,853.07 is: 1,263,153,933.82
Step by Step Solution
- Step 1: Write the proportion equation
1,629,645,609.21 : 2,248,965,202.34 = 915,306,853.07 : x - Step 2: Convert to fraction form
1,629,645,609.21/2,248,965,202.34 = 915,306,853.07/x - Step 3: Cross multiply
1,629,645,609.21x = 2,248,965,202.34 × 915,306,853.07 - Step 4: Simplify right side
1,629,645,609.21x = 2,058,493,262,001,939,968 - Step 5: Solve for x
x = 2,058,493,262,001,939,968/1,629,645,609.21 - Step 6: Final answer
x = 1,263,153,933.82
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1.5x scale
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.