Finding the Fourth Proportional to 1,679,626,207.65, 2,519,439,311.48 and 989,178,060.45
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Solution
The fourth proportional to 1,679,626,207.65, 2,519,439,311.48 and 989,178,060.45 is: 1,483,767,090.68
Step by Step Solution
- Step 1: Write the proportion equation
1,679,626,207.65 : 2,519,439,311.48 = 989,178,060.45 : x - Step 2: Convert to fraction form
1,679,626,207.65/2,519,439,311.48 = 989,178,060.45/x - Step 3: Cross multiply
1,679,626,207.65x = 2,519,439,311.48 × 989,178,060.45 - Step 4: Simplify right side
1,679,626,207.65x = 2,492,174,091,546,323,968 - Step 5: Solve for x
x = 2,492,174,091,546,323,968/1,679,626,207.65 - Step 6: Final answer
x = 1,483,767,090.68
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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.