Finding the Fourth Proportional to 1,357,485,812.80, 2,036,228,719.20 and 539,598,113.80
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Solution
The fourth proportional to 1,357,485,812.80, 2,036,228,719.20 and 539,598,113.80 is: 809,397,170.70
Step by Step Solution
- Step 1: Write the proportion equation
1,357,485,812.80 : 2,036,228,719.20 = 539,598,113.80 : x - Step 2: Convert to fraction form
1,357,485,812.80/2,036,228,719.20 = 539,598,113.80/x - Step 3: Cross multiply
1,357,485,812.80x = 2,036,228,719.20 × 539,598,113.80 - Step 4: Simplify right side
1,357,485,812.80x = 1,098,745,176,145,709,824 - Step 5: Solve for x
x = 1,098,745,176,145,709,824/1,357,485,812.80 - Step 6: Final answer
x = 809,397,170.70
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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.