Finding the Fourth Proportional to 1,629,645,612.21, 2,248,965,206.48 and 915,306,856.07
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Solution
The fourth proportional to 1,629,645,612.21, 2,248,965,206.48 and 915,306,856.07 is: 1,263,153,937.96
Step by Step Solution
- Step 1: Write the proportion equation
1,629,645,612.21 : 2,248,965,206.48 = 915,306,856.07 : x - Step 2: Convert to fraction form
1,629,645,612.21/2,248,965,206.48 = 915,306,856.07/x - Step 3: Cross multiply
1,629,645,612.21x = 2,248,965,206.48 × 915,306,856.07 - Step 4: Simplify right side
1,629,645,612.21x = 2,058,493,272,538,205,952 - Step 5: Solve for x
x = 2,058,493,272,538,205,952/1,629,645,612.21 - Step 6: Final answer
x = 1,263,153,937.96
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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.