Finding the Fourth Proportional to 1,439,025,011.88, 2,158,211,197.67 and 651,558,817.65
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Solution
The fourth proportional to 1,439,025,011.88, 2,158,211,197.67 and 651,558,817.65 is: 977,190,475.90
Step by Step Solution
- Step 1: Write the proportion equation
1,439,025,011.88 : 2,158,211,197.67 = 651,558,817.65 : x - Step 2: Convert to fraction form
1,439,025,011.88/2,158,211,197.67 = 651,558,817.65/x - Step 3: Cross multiply
1,439,025,011.88x = 2,158,211,197.67 × 651,558,817.65 - Step 4: Simplify right side
1,439,025,011.88x = 1,406,201,536,189,597,696 - Step 5: Solve for x
x = 1,406,201,536,189,597,696/1,439,025,011.88 - Step 6: Final answer
x = 977,190,475.90
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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.