Finding the Fourth Proportional to 352,356,579.80, 528,534,869.70 and 261,657,315.80
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Solution
The fourth proportional to 352,356,579.80, 528,534,869.70 and 261,657,315.80 is: 392,485,973.70
Step by Step Solution
- Step 1: Write the proportion equation
352,356,579.80 : 528,534,869.70 = 261,657,315.80 : x - Step 2: Convert to fraction form
352,356,579.80/528,534,869.70 = 261,657,315.80/x - Step 3: Cross multiply
352,356,579.80x = 528,534,869.70 × 261,657,315.80 - Step 4: Simplify right side
352,356,579.80x = 138,295,015,312,404,752 - Step 5: Solve for x
x = 138,295,015,312,404,752/352,356,579.80 - Step 6: Final answer
x = 392,485,973.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.