Finding the Fourth Proportional to 478,448,900.80, 660,259,747.97 and 258,432,326.80
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Solution
The fourth proportional to 478,448,900.80, 660,259,747.97 and 258,432,326.80 is: 356,636,754.05
Step by Step Solution
- Step 1: Write the proportion equation
478,448,900.80 : 660,259,747.97 = 258,432,326.80 : x - Step 2: Convert to fraction form
478,448,900.80/660,259,747.97 = 258,432,326.80/x - Step 3: Cross multiply
478,448,900.80x = 660,259,747.97 × 258,432,326.80 - Step 4: Simplify right side
478,448,900.80x = 170,632,462,956,967,392 - Step 5: Solve for x
x = 170,632,462,956,967,392/478,448,900.80 - Step 6: Final answer
x = 356,636,754.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.