Finding the Fourth Proportional to 1,272,466.54, 1,908,649.95 and 431,018.26
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Solution
The fourth proportional to 1,272,466.54, 1,908,649.95 and 431,018.26 is: 646,510.50
Step by Step Solution
- Step 1: Write the proportion equation
1,272,466.54 : 1,908,649.95 = 431,018.26 : x - Step 2: Convert to fraction form
1,272,466.54/1,908,649.95 = 431,018.26/x - Step 3: Cross multiply
1,272,466.54x = 1,908,649.95 × 431,018.26 - Step 4: Simplify right side
1,272,466.54x = 822,662,980,398.09 - Step 5: Solve for x
x = 822,662,980,398.09/1,272,466.54 - Step 6: Final answer
x = 646,510.50
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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.