Finding the Fourth Proportional to 853,189,720.76, 1,278,660,907.98 and 361,294,334.18
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Solution
The fourth proportional to 853,189,720.76, 1,278,660,907.98 and 361,294,334.18 is: 541,465,667.19
Step by Step Solution
- Step 1: Write the proportion equation
853,189,720.76 : 1,278,660,907.98 = 361,294,334.18 : x - Step 2: Convert to fraction form
853,189,720.76/1,278,660,907.98 = 361,294,334.18/x - Step 3: Cross multiply
853,189,720.76x = 1,278,660,907.98 × 361,294,334.18 - Step 4: Simplify right side
853,189,720.76x = 461,972,941,390,628,352 - Step 5: Solve for x
x = 461,972,941,390,628,352/853,189,720.76 - Step 6: Final answer
x = 541,465,667.19
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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.