Finding the Fourth Proportional to 391,034,715.40, 586,929,986.70 and 197,165,038.60
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Solution
The fourth proportional to 391,034,715.40, 586,929,986.70 and 197,165,038.60 is: 295,938,107.09
Step by Step Solution
- Step 1: Write the proportion equation
391,034,715.40 : 586,929,986.70 = 197,165,038.60 : x - Step 2: Convert to fraction form
391,034,715.40/586,929,986.70 = 197,165,038.60/x - Step 3: Cross multiply
391,034,715.40x = 586,929,986.70 × 197,165,038.60 - Step 4: Simplify right side
391,034,715.40x = 115,722,073,483,202,992 - Step 5: Solve for x
x = 115,722,073,483,202,992/391,034,715.40 - Step 6: Final answer
x = 295,938,107.09
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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.