Finding the Fourth Proportional to 1,631,618,632.90, 2,251,563,305.61 and 926,768,420.02
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Solution
The fourth proportional to 1,631,618,632.90, 2,251,563,305.61 and 926,768,420.02 is: 1,278,900,427.61
Step by Step Solution
- Step 1: Write the proportion equation
1,631,618,632.90 : 2,251,563,305.61 = 926,768,420.02 : x - Step 2: Convert to fraction form
1,631,618,632.90/2,251,563,305.61 = 926,768,420.02/x - Step 3: Cross multiply
1,631,618,632.90x = 2,251,563,305.61 × 926,768,420.02 - Step 4: Simplify right side
1,631,618,632.90x = 2,086,677,767,315,188,224 - Step 5: Solve for x
x = 2,086,677,767,315,188,224/1,631,618,632.90 - Step 6: Final answer
x = 1,278,900,427.61
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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.