Finding the Fourth Proportional to 1,379,863,298.70, 2,069,794,948.05 and 828,865,269.90
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Solution
The fourth proportional to 1,379,863,298.70, 2,069,794,948.05 and 828,865,269.90 is: 1,243,297,904.85
Step by Step Solution
- Step 1: Write the proportion equation
1,379,863,298.70 : 2,069,794,948.05 = 828,865,269.90 : x - Step 2: Convert to fraction form
1,379,863,298.70/2,069,794,948.05 = 828,865,269.90/x - Step 3: Cross multiply
1,379,863,298.70x = 2,069,794,948.05 × 828,865,269.90 - Step 4: Simplify right side
1,379,863,298.70x = 1,715,581,148,253,119,744 - Step 5: Solve for x
x = 1,715,581,148,253,119,744/1,379,863,298.70 - Step 6: Final answer
x = 1,243,297,904.85
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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.