Finding the Fourth Proportional to 482,467,987.98, 664,124,905.71 and 420,481,759.50
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Solution
The fourth proportional to 482,467,987.98, 664,124,905.71 and 420,481,759.50 is: 578,799,870.33
Step by Step Solution
- Step 1: Write the proportion equation
482,467,987.98 : 664,124,905.71 = 420,481,759.50 : x - Step 2: Convert to fraction form
482,467,987.98/664,124,905.71 = 420,481,759.50/x - Step 3: Cross multiply
482,467,987.98x = 664,124,905.71 × 420,481,759.50 - Step 4: Simplify right side
482,467,987.98x = 279,252,408,880,712,416 - Step 5: Solve for x
x = 279,252,408,880,712,416/482,467,987.98 - Step 6: Final answer
x = 578,799,870.33
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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.