Finding the Fourth Proportional to 391,270,462.40, 586,905,693.60 and 372,138,586.40
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Solution
The fourth proportional to 391,270,462.40, 586,905,693.60 and 372,138,586.40 is: 558,207,879.60
Step by Step Solution
- Step 1: Write the proportion equation
391,270,462.40 : 586,905,693.60 = 372,138,586.40 : x - Step 2: Convert to fraction form
391,270,462.40/586,905,693.60 = 372,138,586.40/x - Step 3: Cross multiply
391,270,462.40x = 586,905,693.60 × 372,138,586.40 - Step 4: Simplify right side
391,270,462.40x = 218,410,255,166,415,520 - Step 5: Solve for x
x = 218,410,255,166,415,520/391,270,462.40 - Step 6: Final answer
x = 558,207,879.60
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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.