Finding the Fourth Proportional to 1,213,474,355.85, 1,674,118,121.20 and 704,750,465.80
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Solution
The fourth proportional to 1,213,474,355.85, 1,674,118,121.20 and 704,750,465.80 is: 972,278,911.40
Step by Step Solution
- Step 1: Write the proportion equation
1,213,474,355.85 : 1,674,118,121.20 = 704,750,465.80 : x - Step 2: Convert to fraction form
1,213,474,355.85/1,674,118,121.20 = 704,750,465.80/x - Step 3: Cross multiply
1,213,474,355.85x = 1,674,118,121.20 × 704,750,465.80 - Step 4: Simplify right side
1,213,474,355.85x = 1,179,835,525,724,248,576 - Step 5: Solve for x
x = 1,179,835,525,724,248,576/1,213,474,355.85 - Step 6: Final answer
x = 972,278,911.40
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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.