Finding the Fourth Proportional to 418,592,351.51, 627,754,621.13 and 138,421,220.31
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Solution
The fourth proportional to 418,592,351.51, 627,754,621.13 and 138,421,220.31 is: 207,587,550.03
Step by Step Solution
- Step 1: Write the proportion equation
418,592,351.51 : 627,754,621.13 = 138,421,220.31 : x - Step 2: Convert to fraction form
418,592,351.51/627,754,621.13 = 138,421,220.31/x - Step 3: Cross multiply
418,592,351.51x = 627,754,621.13 × 138,421,220.31 - Step 4: Simplify right side
418,592,351.51x = 86,894,560,710,113,008 - Step 5: Solve for x
x = 86,894,560,710,113,008/418,592,351.51 - Step 6: Final answer
x = 207,587,550.03
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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.