Finding the Fourth Proportional to 651,860.20, 977,207.10 and 427,328.20
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Solution
The fourth proportional to 651,860.20, 977,207.10 and 427,328.20 is: 640,609.98
Step by Step Solution
- Step 1: Write the proportion equation
651,860.20 : 977,207.10 = 427,328.20 : x - Step 2: Convert to fraction form
651,860.20/977,207.10 = 427,328.20/x - Step 3: Cross multiply
651,860.20x = 977,207.10 × 427,328.20 - Step 4: Simplify right side
651,860.20x = 417,588,151,070.22 - Step 5: Solve for x
x = 417,588,151,070.22/651,860.20 - Step 6: Final answer
x = 640,609.98
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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.