Finding the Fourth Proportional to 5,425,781.70, 8,139,968.55 and 1,639,301.70
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Solution
The fourth proportional to 5,425,781.70, 8,139,968.55 and 1,639,301.70 is: 2,459,344.11
Step by Step Solution
- Step 1: Write the proportion equation
5,425,781.70 : 8,139,968.55 = 1,639,301.70 : x - Step 2: Convert to fraction form
5,425,781.70/8,139,968.55 = 1,639,301.70/x - Step 3: Cross multiply
5,425,781.70x = 8,139,968.55 × 1,639,301.70 - Step 4: Simplify right side
5,425,781.70x = 13,343,864,281,961.54 - Step 5: Solve for x
x = 13,343,864,281,961.54/5,425,781.70 - Step 6: Final answer
x = 2,459,344.11
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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.