Finding the Fourth Proportional to 1,290,225,624.18, 1,935,332,912.69 and 357,545,808.05
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Solution
The fourth proportional to 1,290,225,624.18, 1,935,332,912.69 and 357,545,808.05 is: 536,317,181.38
Step by Step Solution
- Step 1: Write the proportion equation
1,290,225,624.18 : 1,935,332,912.69 = 357,545,808.05 : x - Step 2: Convert to fraction form
1,290,225,624.18/1,935,332,912.69 = 357,545,808.05/x - Step 3: Cross multiply
1,290,225,624.18x = 1,935,332,912.69 × 357,545,808.05 - Step 4: Simplify right side
1,290,225,624.18x = 691,970,170,103,400,448 - Step 5: Solve for x
x = 691,970,170,103,400,448/1,290,225,624.18 - Step 6: Final answer
x = 536,317,181.38
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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.