Finding the Fourth Proportional to 390,391,058.23, 585,299,609.17 and 186,062,622.55
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Solution
The fourth proportional to 390,391,058.23, 585,299,609.17 and 186,062,622.55 is: 278,957,158.37
Step by Step Solution
- Step 1: Write the proportion equation
390,391,058.23 : 585,299,609.17 = 186,062,622.55 : x - Step 2: Convert to fraction form
390,391,058.23/585,299,609.17 = 186,062,622.55/x - Step 3: Cross multiply
390,391,058.23x = 585,299,609.17 × 186,062,622.55 - Step 4: Simplify right side
390,391,058.23x = 108,902,380,257,731,840 - Step 5: Solve for x
x = 108,902,380,257,731,840/390,391,058.23 - Step 6: Final answer
x = 278,957,158.37
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.