Finding the Fourth Proportional to 401,278,568.96, 553,766,386.62 and 225,075,981.18
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Solution
The fourth proportional to 401,278,568.96, 553,766,386.62 and 225,075,981.18 is: 310,605,954.20
Step by Step Solution
- Step 1: Write the proportion equation
401,278,568.96 : 553,766,386.62 = 225,075,981.18 : x - Step 2: Convert to fraction form
401,278,568.96/553,766,386.62 = 225,075,981.18/x - Step 3: Cross multiply
401,278,568.96x = 553,766,386.62 × 225,075,981.18 - Step 4: Simplify right side
401,278,568.96x = 124,639,512,812,999,728 - Step 5: Solve for x
x = 124,639,512,812,999,728/401,278,568.96 - Step 6: Final answer
x = 310,605,954.20
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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.