Finding the Fourth Proportional to 391,954,397.28, 587,968,220.88 and 115,605,880.80
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Solution
The fourth proportional to 391,954,397.28, 587,968,220.88 and 115,605,880.80 is: 173,419,623.63
Step by Step Solution
- Step 1: Write the proportion equation
391,954,397.28 : 587,968,220.88 = 115,605,880.80 : x - Step 2: Convert to fraction form
391,954,397.28/587,968,220.88 = 115,605,880.80/x - Step 3: Cross multiply
391,954,397.28x = 587,968,220.88 × 115,605,880.80 - Step 4: Simplify right side
391,954,397.28x = 67,972,584,057,241,352 - Step 5: Solve for x
x = 67,972,584,057,241,352/391,954,397.28 - Step 6: Final answer
x = 173,419,623.63
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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.