Finding the Fourth Proportional to 489,498,178.91, 734,031,805.10 and 259,413,356.75
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Solution
The fourth proportional to 489,498,178.91, 734,031,805.10 and 259,413,356.75 is: 389,005,848.69
Step by Step Solution
- Step 1: Write the proportion equation
489,498,178.91 : 734,031,805.10 = 259,413,356.75 : x - Step 2: Convert to fraction form
489,498,178.91/734,031,805.10 = 259,413,356.75/x - Step 3: Cross multiply
489,498,178.91x = 734,031,805.10 × 259,413,356.75 - Step 4: Simplify right side
489,498,178.91x = 190,417,654,517,285,568 - Step 5: Solve for x
x = 190,417,654,517,285,568/489,498,178.91 - Step 6: Final answer
x = 389,005,848.69
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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.