Finding the Fourth Proportional to 391,393,335,879.80, 587,174,506,358 and 119,138,874,305.48
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Solution
The fourth proportional to 391,393,335,879.80, 587,174,506,358 and 119,138,874,305.48 is: 178,734,033,759.46
Step by Step Solution
- Step 1: Write the proportion equation
391,393,335,879.80 : 587,174,506,358 = 119,138,874,305.48 : x - Step 2: Convert to fraction form
391,393,335,879.80/587,174,506,358 = 119,138,874,305.48/x - Step 3: Cross multiply
391,393,335,879.80x = 587,174,506,358 × 119,138,874,305.48 - Step 4: Simplify right side
391,393,335,879.80x = 69,955,309,708,368,028,893,184 - Step 5: Solve for x
x = 69,955,309,708,368,028,893,184/391,393,335,879.80 - Step 6: Final answer
x = 178,734,033,759.46
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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.