Finding the Fourth Proportional to 690,091,521.62, 1,034,948,742.17 and 247,351,680.05
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Solution
The fourth proportional to 690,091,521.62, 1,034,948,742.17 and 247,351,680.05 is: 370,959,940.99
Step by Step Solution
- Step 1: Write the proportion equation
690,091,521.62 : 1,034,948,742.17 = 247,351,680.05 : x - Step 2: Convert to fraction form
690,091,521.62/1,034,948,742.17 = 247,351,680.05/x - Step 3: Cross multiply
690,091,521.62x = 1,034,948,742.17 × 247,351,680.05 - Step 4: Simplify right side
690,091,521.62x = 255,996,310,134,972,256 - Step 5: Solve for x
x = 255,996,310,134,972,256/690,091,521.62 - Step 6: Final answer
x = 370,959,940.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.