Finding the Fourth Proportional to 579,571,146, 799,735,470.84 and 391,807,981.44
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Solution
The fourth proportional to 579,571,146, 799,735,470.84 and 391,807,981.44 is: 540,645,859.75
Step by Step Solution
- Step 1: Write the proportion equation
579,571,146 : 799,735,470.84 = 391,807,981.44 : x - Step 2: Convert to fraction form
579,571,146/799,735,470.84 = 391,807,981.44/x - Step 3: Cross multiply
579,571,146x = 799,735,470.84 × 391,807,981.44 - Step 4: Simplify right side
579,571,146x = 313,342,740,515,788,416 - Step 5: Solve for x
x = 313,342,740,515,788,416/579,571,146 - Step 6: Final answer
x = 540,645,859.75
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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.