Finding the Fourth Proportional to 391,165,206.40, 586,747,809.60 and 236,197,010.80
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Solution
The fourth proportional to 391,165,206.40, 586,747,809.60 and 236,197,010.80 is: 354,295,516.20
Step by Step Solution
- Step 1: Write the proportion equation
391,165,206.40 : 586,747,809.60 = 236,197,010.80 : x - Step 2: Convert to fraction form
391,165,206.40/586,747,809.60 = 236,197,010.80/x - Step 3: Cross multiply
391,165,206.40x = 586,747,809.60 × 236,197,010.80 - Step 4: Simplify right side
391,165,206.40x = 138,588,078,720,967,552 - Step 5: Solve for x
x = 138,588,078,720,967,552/391,165,206.40 - Step 6: Final answer
x = 354,295,516.20
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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.