Finding the Fourth Proportional to 1,272,968.12, 1,909,309.62 and 326,361.08
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Solution
The fourth proportional to 1,272,968.12, 1,909,309.62 and 326,361.08 is: 489,505.07
Step by Step Solution
- Step 1: Write the proportion equation
1,272,968.12 : 1,909,309.62 = 326,361.08 : x - Step 2: Convert to fraction form
1,272,968.12/1,909,309.62 = 326,361.08/x - Step 3: Cross multiply
1,272,968.12x = 1,909,309.62 × 326,361.08 - Step 4: Simplify right side
1,272,968.12x = 623,124,349,637.59 - Step 5: Solve for x
x = 623,124,349,637.59/1,272,968.12 - Step 6: Final answer
x = 489,505.07
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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.