Finding the Fourth Proportional to 1,139,025,949.70, 1,571,844,230.84 and 630,389,652.44
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Solution
The fourth proportional to 1,139,025,949.70, 1,571,844,230.84 and 630,389,652.44 is: 869,931,311.60
Step by Step Solution
- Step 1: Write the proportion equation
1,139,025,949.70 : 1,571,844,230.84 = 630,389,652.44 : x - Step 2: Convert to fraction form
1,139,025,949.70/1,571,844,230.84 = 630,389,652.44/x - Step 3: Cross multiply
1,139,025,949.70x = 1,571,844,230.84 × 630,389,652.44 - Step 4: Simplify right side
1,139,025,949.70x = 990,874,338,369,046,784 - Step 5: Solve for x
x = 990,874,338,369,046,784/1,139,025,949.70 - Step 6: Final answer
x = 869,931,311.60
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1.5x scale
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.