Finding the Fourth Proportional to 703,317,291.39, 1,055,128,283.51 and 211,989,458.07
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Solution
The fourth proportional to 703,317,291.39, 1,055,128,283.51 and 211,989,458.07 is: 318,030,106.40
Step by Step Solution
- Step 1: Write the proportion equation
703,317,291.39 : 1,055,128,283.51 = 211,989,458.07 : x - Step 2: Convert to fraction form
703,317,291.39/1,055,128,283.51 = 211,989,458.07/x - Step 3: Cross multiply
703,317,291.39x = 1,055,128,283.51 × 211,989,458.07 - Step 4: Simplify right side
703,317,291.39x = 223,676,073,014,554,272 - Step 5: Solve for x
x = 223,676,073,014,554,272/703,317,291.39 - Step 6: Final answer
x = 318,030,106.40
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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.