Finding the Fourth Proportional to 518,612,212.09, 715,690,404.17 and 283,657,848.54
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Solution
The fourth proportional to 518,612,212.09, 715,690,404.17 and 283,657,848.54 is: 391,450,867.40
Step by Step Solution
- Step 1: Write the proportion equation
518,612,212.09 : 715,690,404.17 = 283,657,848.54 : x - Step 2: Convert to fraction form
518,612,212.09/715,690,404.17 = 283,657,848.54/x - Step 3: Cross multiply
518,612,212.09x = 715,690,404.17 × 283,657,848.54 - Step 4: Simplify right side
518,612,212.09x = 203,011,200,267,585,248 - Step 5: Solve for x
x = 203,011,200,267,585,248/518,612,212.09 - Step 6: Final answer
x = 391,450,867.40
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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.